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SOTECH VIPER Plate
Carrier System
9/12/12 - The VIPER Plate Carrier Vest, Releasable (VVR) from Special Operations Technologies (SOTECH) is a lightweight, low visibility, modular plate carrier vest. The VIPER has no 'cummerbund'. Instead, it features SOTECH's new HVAS attachment system, enabling multiple configurations for a variety of body sizes. It also features National Molding's Quad Release Trigger Assembly for its release system. Overall Description - The VIPER is actually a complete modular system that includes two types of plate carrier vests, a padded belt, proprietary side pouches that can be configured to suit a variety of needs, and a mission pack to carry it all in. There are two Plate Carrier Vests - the standard and releasable models. The releasable model is shown here. It has a pretty unique two-point release system that makes it very quick and easy to doff, yet still be able to hang onto it as a whole, instead of it coming apart in separate pieces. The VIPER vest is constructed mainly of 500D Cordura, with high wear areas made of 1000D. The vest without side pouches weighs only 1.3 lbs. Front Plate Carrier - The front plate carrier of the VIPER vest is designed to carry a hard plate + soft armour insert (MBAV-cut/plate shaped backer). The plate compartment is accessed through a flap at the bottom of the carrier. Elastic webbing on the edges of the carrier keep it snug on the plate. This is a nice touch as not all plates are shaped exactly the same or are of the same thickness. On the front is a kangaroo pocket, which is sized to fit a variety of magazines, like M4, M14, AK and SCAR-H magazines. There are three internal compartments in the kangaroo pocket, for one magazine or radio per compartment. Each compartment has elastic bungee retention for the magazine. Note that shorter mags like the M14 mags will sit lower in the pouch than M4 or AK mags. The AK mags are a bit long for the bungee retention to be used, but the elastic on the sides of the kangaroo pouch help keep them secure. On the front of the kangaroo pouch are 3 rows x 6 columns of PALS webbing. The webbing on the sides are elastic, which keep the pouch under tension. It's flat when empty, and mags are retained quite well even without using the bungees. On the right side of the upper chest is a small molle panel with 2 rows and 3 columns of PALS. Actually, the top row only has 2 columns as the outer one is smaller than standard width. On the left side of the chest is the release lever, which is secured under a panel. More on this later. There's a 1.5" x 5" loop velcro field at the top of the carrier for patches or ID tags. I really like the velcro strap that is used to secure a hydration tube right where you can access it hands-free. It's shown here with a Source hydration tube. It can also be used for comm cables. The VIPER vest doesn't come with any padding to keep the profile low. The mesh padding you see installed here is part of the VIPER Comfort System (VCS), which includes front and rear torso pads, and the shoulder yoke. The pads attach via velcro and elastic loops (on the shoulders). They provide additional comfort when the vest is loaded up, as well as some airspace between the plate carrier and the body. On the shoulders, the sleeve encloses the shoulder strap and provides routing for comms cables or hydration tubes. The shoulder straps are attached to the top corners of the front carrier, and are adjustable in length. At the end of the straps are 1.5" buckles. The left one is a special releasable buckle, which disengages when the release lever is pulled. The right one is a conventional side-release buckle. The shoulder straps are designed for full range of motion of the arms, and no obstruction when shouldering a weapon. |
![]() Front plate carrier |
![]() Comfort system installed inside |
![]() Kangaroo pouch |
![]() Hydro tube routing |
Rear Plate Carrier - The rear plate carrier is sized such that it will carry a plate and a hydration reservoir inside. The flat/baffled reservoirs like the Source Hydration ILPS or WLPS Reservoirs. Note that they may not be able to be filled to full capacity, but around 50% instead. This eliminates the need for an external hydration pouch, saving weight and bulk. The main compartment has a divider for the plate and hydration reservoir, and hydro tube ports/openings on both top corners. There's also a low profile drag handle and accessory pocket at the top of the rear plate carrier. The pocket has elastic loops inside, and is closed with a velcro-secured flap. The Comfort System mesh pad (sold separately) attaches to the inside of the carrier by velcro. The 1.5" female buckles are sewn at the top corners of the rear carrier, to which the front carrier attaches to. You'll also notice that there is elastic webbing on the sides, which helps compress the reservoir, and keep the carrier snug should a smaller plate be used.
Quick Release System - The VIPER VVR utilizes the National Molding Quad Release System. This is an innovative system that utilizes their Tether Pull Buckle, connected to a cable release system. The VIPER vest only uses two release cables, so it's actually a 'Dual', not a 'Quad' release system. By using two instead of four release points, the plate carrier front and back are still connected together at the right shoulder and side, so it can be easily carried after doffing. The Tether Pull Buckle works by having a cable pull on a sliding mechanism in the center of the male buckle. As the cable is pulled, the outer 'prongs' are pulled together, disengaging from the female buckle. The beauty of this system is that it only requires actuation by a single lever, and no parts are removed or have to be rerouted for re-assembly. After the buckle is released, it functions just like a standard SR buckle, and clicks back into the female buckle. It's much quicker to put together than other cable release systems. The 1.5" Tether Pull buckles are located on the left shoulder and left side. The right shoulder and side buckles are standard SR buckles. The release lever mechanism is mounted to a plate, and housed within the front plate carrier on the left upper chest. A flap is attached to the lever, and closes securely via velcro and a tab with a snap. To release the VIPER vest, the flap is simply opened and pulled to the right. The lever pulls on the two cables and disengages the buckles, and the vest separates at the left shoulder and side, and falls away. It take only a couple of seconds to reconnect the buckles.
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HVAS system - 'HVAS' stands for 'Horizontal VELCRO Attachment System. The VIPER vest doesn't have a traditional cummerbund system with a molle cummerbund to which pouches can be attached. Instead, SOTECH offers different VIPER pouches which link/connect to each other to form a cummerbund. Whether this saves weight, I'm not sure, but it's an interesting concept. All pouches come in left side and right side versions - they cannot be swapped from one side to the other. The rear plate carrier panel has a velcro tab sewn down near the bottom on each side. This tab is used to attach a side strap, which is adjustable in length and has a female SR buckle on the end. The side straps connect to the male buckles on the front plate carrier. Before any side pouches or panels are attached, the side straps are adjusted in length first, by donning the VIPER vest, and pulling on the loose end of the webbing. The excess webbing is then rolled up and secured, which prevents it from slipping. The straps are then detached from the rear plate carrier, and the desired pouches attached to it, starting from the one closest to the front (near the female buckle). As you can see in the pictures below of the different pouches, each one has a velcro flap that overlaps with the next one, or attaches to the velcro on the vest. The side straps are woven through the pouches, attaching at the very front, and through each one. It's almost like stringing beads on a string. What you can fit on there depends on your torso/waist size. A small guy like me doesn't have much front-back distance between the front and back plate carriers, so I have more limited options than someone bigger. SOTECH has a video showing how the pouches attach to the VIPER. |
![]() Rear plate side strap |
![]() Strap removed |
Note that this is just a sample of available HVAS system pouches for the VIPER plate carrier - there are more. VIPER Extension Panel (VP) - This is also referred to as the VIPER Blank Panel Adapter in their manual. It's a flat panel with 3 rows x 2 channels of MOLLE webbing on the front for attaching any pouch that will fit. It's also used as a spacer or extension, when no pouch is needed. It's also narrower than some of the other VIPER pouches, and is used for slimmer people like me who may not be able to accommodate two larger pouches on each side. As you can see in the photos below, the panel has a velcro tab which attaches to the female buckle on the rear carrier's side strap. If the panel isn't used as the first panel, the tab just folds back and tucks inside. On the other side of the panel is a semi-circular velcro panel connected by elastic (which allows some 'give'), which either attaches to another pouch, or to the rear plate carrier itself. Fine adjustments can be made by overlapping this panel more or less over the pouch it overlaps. |
![]() Extension panel front |
![]() Back |
![]() Used forward of a GP pouch |
![]() Used behind a mag pouch |
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VIPER Magazine Pouch (VMP) - The VMP is sized to fit both 5.56 and 7.62 mags; I've illustrated it below with both. It's a simple bungee-retention, open top mag pouch with 3 rows x 2 columns of MOLLE webbing on the front. As you can see, it has the same tab and velcro panel as the Extension panel, for attaching to other pouches or the plate carrier. VIPER General Purpose Pouch, Rip Away (VGP-RA) - Also shown below is a rip-away version of the VIPER General Purpose Pouch. It's an ultra-lightweight pouch designed to hold one of the following: (1) five M4 mags, (2) an IFAK with 2 tourniquets, (3) two small sports drink bottles, (4) heating/cooling battery pack, or (5) 100 rounds of 7.62 mm linked ammunition. The box-shaped pouch itself measures 7" tall x 5" wide x 3" deep. It has stiffening inserts on the front and the back. It has hook velcro on the back. There are two web loops on the sides. It closes via the velcro-secured box top flap. The rip-away platform is also stiffened, and has loop velcro on the front, to which the GP pouch attaches to. It's further secured by the upper and lower V-straps, which buckle together. |
![]() VIPER magazine pouch (left and right) |
![]() Rear |
![]() GP Pouch, rip-away |
![]() Front |
![]() Side/rear |
VIPER Single Plate Pouch (VSPP) - The VSPP is designed to hold a side armour hard plate (5" x 8" specifically), but will also fit a 6" x 6" as shown below. The pouch has a reinforced back panel so it's stiff, and is essentially and open top pouch lined with loop velcro on the inside. Sewn inside the pouch is a webbing divider set up in a cruciform pattern, that can be adjusted to segregate four M4 magazines. It can also be set up to hold a side plate on the inside and two M4 mags towards the outside. The taller plate or mags are retained by two bungee cord retainers with tabs. When the pouch is empty, it's kept flat and closed by a row of 1" velcro webbing inside the top of the pouch. On the front are 3 rows x 4 columns of MOLLE webbing. It has a grommeted drain hole on the bottom. It can also be used as a radio, battery, food or general item shingle. |
![]() Single Plate Pouch |
![]() Inside |
![]() 4 mags or side plate+2 mags |
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VIPER Padded Armoured Belt (VPAB) - The VIPER padded armoured belt is actually quite comfortable for a non-contoured design, I found. This sample did not include armour. It has an inner and outer sleeve. The inner sleeve holds the padding + armour insert, and has a full-length velcro-secured opening running along the bottom of the belt. The outer sleeve is what the rigger's belt is threaded through. It has openings on the bottom of the sides so that thigh rigs can be hung directly from the belt inside, instead of the MOLLE webbing on the outside. It includes a removable riggers belt with Cobra buckle. The riggers belt has a V-ring attached to it. The belt has two rows of MOLLE webbing running around the outside, with an extra third row at the back, so it's tallest in the rear and tapers towards the front. The belt is lined with mesh and a thin layer of spacer mesh, and has a strip of velcro at the rear for interfacing with the Load Lifter panel.
BLOCS Quick Eject Tourniquet Carrier (BQETC) - The BLOCS Quick Eject Tourniquet Carrier is designed to get a tourniquet into your hands quickly and effectively. The carrier keeps the tourniquet protected from dirt and moisture, which can render tourniquets ineffective. The carrier consists of a piece of pack cloth nylon, in which the tourniquet is wrapped in (sort of like a burrito). The elastic and webbing is then stretched around it and secured by velcro and a snap. When the snap is pulled, the wrap unfolds and the tourniquet falls into your hand. The carrier has a velcro-secured strap that is compatible with regular belts or MOLLE platforms. The flat sheet of fabric is sewn to the straps at two points. The bottom point 'scrunches' up the fabric into a corner so that the tourniquet is placed there, then the sheet is wrapped around it. For some reason, I wasn't able to get this to work - I couldn't wrap the tourniquet neatly even after about 20 tries. There was always some portion uncovered. I followed the SOTECH video that showed how to wrap it, and noticed that the sheet in the video would open out flat, and wasn't sewn at the bottom. I found out that the stitch was added in later versions. SOTECH put up a couple more videos with instructions on how to wrap it, but I still didn't get a good wrap. I ended up cutting the stitching off the bottom so that I could wrap it with the fabric flattened out and it worked much, much better for me.
VIPER Flat Individual First Aid Kit (VFIFAK) - The VIPER Flat IFAK makes use of the 'dead space' in the small of your back under the rear plate carrier. Rather than a bulky FAK pouch mounted somewhere on the vest or belt, the Flat IFAK 'spreads out' the contents into a flatter, lower profile package when sitting in a vehicle or helicopter, or moving in confined spaces. The Flat IFAK also provides some lumbar support when seated, as it presses up against the lower back. The Flat IFAK has two main components: a MOLLE compatible sleeve, and the IFAK which fits inside the sleeve. The sleeve is open on both sides, and measures approximately 9" wide x 7" tall, and is designed to mount in the middle back of the VIPER padded armoured belt. Inside the sleeve is a short strip of 1" hook velcro, which secures the IFAK inside it. The sleeve has SOTECH's Flex-tab MOLLE straps to mount it to the belt, or anywhere else. It can also be mounted on the side, or front of a plate carrier; as additional pouches can be mounted to the outside of the sleeve. The IFAK is a folding/overlapping design with slot pockets, velcro loops and a trauma shear pocket. It can be used in conjunction with the sleeve or on its own as a medium sized IFAK. On the left panel is a clear plastic slot pocket measuring 4" tall x 3". On the main panel is a 4" x 4" x 1.25" slot pocket, and a 3" x 4" x 1.25" slot pocket next to it. These two pockets are designed for bulkier items like dressings and bandages. A smaller pocket with two velcro loops is to the right of that. The right panel has a trauma shear pocket, and the top panel has a full-sized 8" x 5" flat pocket. The left and right panels have grommets at the upper corners, and the main panel has a grommet at the top. A length of 550 cord is connected to the left and right panel grommets and goes through the main panel grommet. Pulling on this cord draws the left and right panels together, 'cinches up' the IFAK, where it can be hung up by the cord, hung around the neck, or stuffed into a cargo pocket. When the IFAK is cinched up, the left and right panels overlap and secure to each other with velcro. On the back of the IFAK is a long vertical strip of 0.5" loop velcro, which engages the strip inside the sleeve. This keeps the IFAK inside the sleeve until it's pulled out via the webbing loop handles/tabs on either side. It's secure enough such that it will not dispense without deliberate side force from the user. The pull tabs can be tucked inside the sleeve, or the left exposed. The IFAK can be pulled out from either side with one hand, so it's fully ambidextrous. Check out SOTECH's video on the Flat IFAK.
VIPER Load Lifter (VLL) - The VIPER Load Lifter Panel is a lightweight back panel that attaches at the rear of the plate carrier, down to the padded armoured belt to offload some of the weight from the operator's shoulders to his waist. A sheet of plastic is encased in nylon fabric, with velcro strips sewn to the outside that attach it to the inside of the rear plate carrier. The comfort panel attaches on top of that. At the bottom of the Load Lifter Panel is velcro that engages the velcro inside the padded belt. The Load Lifter can be adjusted up and down to attain the right amount of offload. The wide strip of webbing sewn across at the bottom of the panel connecting the two sides pulls the panel into a slight curve, to give it vertical rigidity. It is also supposed to keep the panel pressed up against the inside of the belt to ensure engagement of the velcro. I'm not sure whether it's necessary, as the belt is curved anyway. Also, the bottom corners were a bit pointy, and I felt them digging into my waist under the belt. I took a lighter to them, melted the corners and rounded them out to make them more comfortable.
Mission Pack Micro with Hydration (MP-MH) - The Mission Pack, Micro is a lighweight pack with the ability to house the entire VIPER Plate Carrier Kit. The inner walls are lined with loop Velcro for additional modularity. It was designed to meet the need for a smaller direct action bag that could hold mission essential items without interfering with gun belts, dump pouches, extra magazines and other waist-level gear. It's constructed out of 1000D Cordura and weighs only 1.8 lbs. It's shown here with the optional Helmet Mesh Adapter (MP-HGAP). The Mission Pack will hold a 100 oz (3L) hydration reservoir inside (not included). It doesn't have a separate hydration bladder compartment, but does have a hanger inside the top of the pack, as well as a hydration hose port. Approximate dimensions are 16" x 12" x 6", with 1152 cu. in. of volume. It's intended to house the VIPER Vest with pouches, plates, IFAK and ammo. What fits will depend on the size of the pouches and what's in them. Here are the specs of the Mission Pack Micro: EXTERIOR: INTERIOR:
As I mentioned above, what will fit inside the Mission Pack Micro depends on how much you've attached to the belt or plate carrier. The padded belt fits around the circumference of the inside compartment, then the plate carrier is put in. If loaded pouches are attached to the belt, as well as a holster, chances are that it won't fit in the pack with the plate carrier. I'm able to fit the belt with flat IFAK attached to it, but without a holster or pouches loaded, along with the plate carrier with only the front kangaroo pocket loaded with mags. The plate carrier had both front and rear plates. If you have the fully loaded plate carrier with plates, reservoir, front magazines and side pouches, you will not be able to fit the loaded padded belt in the pack with it. I was able to fit the entire VIPER kit with padded belt, but only if all the pouches were empty. So, three possible ways the Mission Pack Micro can be used is to carry the VIPER kit without any mags or items inside the pouches; with a fully loaded VIPER plate carrier, and wear the belt separately, or as a means to carry supplies and a helmet with belt inside it, with the plate carrier worn by the user. The Helmet Mesh Adapter can be used on any MOLLE-compatible pack that's large enough and has the required attach points, and is made of mesh material. The elastic on the sides allows it to conform to most helmets, and it can be used for anything else like a poncho or clothing. The one thing I'd have liked is to have quick-release buckles instead of ladder locks to make it easier to insert and remove a helmet. As it is, the straps have to be loosened and cinched up every time, and it doesn't open up completely.
Observations and notes - The VIPER kit is an interesting concept; offering a complete 'turn-key' package that should meet the needs of many users requiring a modular plate carrier, and a convenient way of transporting it. Check out the 2012 SHOT SHOW video from gearwhoresanonymous that summarizes the VIPER system. SOTECH is going off the beaten path with the HVAS system, since the VIPER plate carrier vest deviates from the 'standard' MOLLE-compatible cummerbund on the sides. SOTECH makes a variety of pouches to suit most users needs, and if they don't, the user can always use the MOLLE panel extension and any MOLLE-compatible pouch on it. Whether this system of proprietary pouches is more versatile or lighter than a standard MOLLE cummerbund and pouches, I'm not sure as it'll depend on the cummerbund and pouches. As for versatility, that also depends. With the HVAS system, you don't have to worry about buying the right size cummerbund. But, you do need to find the combination of pouches or panels that will fit you. The pouches are different sizes, so depending on how much girth you have, you may or may not be able to combine them and also have them fit you exactly. There's a fair amount of adjustability; accomplished by increasing or decreasing the overlap of the velcro connectors, but it's possible to run out of adjustability with certain combos on the rare occasion - maybe a single column width connector would help with that. It's also possible to use the VIPER vest without any side pouches, and use the side straps only, but having side pouches does add to the stability of the whole platform as they stiffen up the side connection. Okay, first the stuff I felt that could be improved. A nitpick I have with the HVAS system is that it relies heavily on Velcro to connect the pouches in series (once they're threaded onto the strap). I found that this results in some velcro noise as I move around, bend my torso, etc, as the velcro interfaces flex. It does 'settle down' and become quieter after a bit, but It's not as 'silent' as a standard MOLLE cummerbund. Another nitpick is that the mesh fabric used on the Comfort System pills quickly on contact with hook velcro. I'd like to see SOTECH use a more pill-resistant mesh. It has not affected the functionality of the VIPER yet, but it's quite noticeable. The elastic loops on the shoulders of the Comfort System yoke (the Y-shaped pad that covers the upper chest and extends over the shoulders) were also too loose, and don't retain the pads on the shoulders as well as they could. In fact, in the photos below, you can see that the pad is not properly placed on my left shoulder; it slipped off to the inside as I was donning the plate carrier and I didn't notice until after the photos were taken. A tighter loop would have helped the pad maintain its position. The Viper Load Lifter actually works quite well to help offload the weight of the plate carrier to the belt, when adjusted correctly. It's easy to adjust; you just move the Load Lifter up and down until you find the sweet spot such that leaning back slightly pushes up on the plate carrier. It doesn't restrict movement at the torso as the Load Lifter panel flexes. One issue I had with the load lifter was that the velcro interface between the Load Lifter and the belt isn't strong enough to support the weight of the belt when it's loaded up. When I connected the belt to the Load Lifter, then tried to don the Plate Carrier with the belt attached, the belt would always peel off the load lifter. I was able to keep them attached when I removed all mags and my pistol from the belt, and did it very carefully. The other option is to put the belt on separately, after the plate carrier is on. When I tried to don the Plate Carrier first, then put the loaded belt on, I wasn't able to get the belt centered or lined up on the velcro very well. When putting on the belt initially, it's never perfectly positioned, but the velcro catches and keeps it in that position, and you can't adjust it unless you remove the belt and start over. I'd like to see stronger (maybe the industrial strength velcro) velcro used or something that secures the belt to the Load Lifter once it's positioned, so that it doesn't peel off as easily.
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