Our over the barrel mounts are rock solid and provide minimal and repeatable point of impact shift. If you have a rifle that can use a proper adjustable gas block, it will do a much better job with a traditional suppressor, than the OSS will. So in essence a lot of that back over the barrel length and weight is wasted space and weight, if not utilized in a more complex form for a lower back pressure design. Built from Grade 5 Titanium and 17-4 stainless steel, the light weight (14.5 oz.) The silencer is typically a hollow metal tube manufactured from steel, aluminum, or titanium and contains expansion chambers. This suppressor is explicitly built for shorter barrel sporting rifles like .308, 762, and 300BLK, so you’re not entirely limited when it comes to which of your guns you can use it with. oss claims the modularity has been approved by the atf, but have yet to provide the letter showing this. Over-barrel suppressors designed around the AR15 platform, the CQB Series adds only 3.7” to your rifle’s overall length. Silencer Shop now stocking the OSS Helix-QD line of 5.56, 7.62, and Magnum suppressors. That’s all pretty standard, but what makes the 556k interesting is the OSS Flow Through design. Available in several over-barrel variations, the Mantis Series suppressors let you find the ideal balance between length, … Sure, it may not be exactly as quiet as an airsoft gun, but it should be noted that … We've sold over the barrel suppressors to private buyers and LE departments, but only with OSS. The Surefires are built like a tank, in my opinion. This means that you have to take into account your barrel’s length and diameter as well as your gas system when choosing a suppressor. Note: The OSS suppressor for an MR762 can be used on an MR556 with the purchase of an inexpensive adapter. We took a look at these innovative suppressors by Amtac , which shorten the length of the barrel and suppressor by fitting them over the barrel. In all the hub-ub of SHOT Show, the small company AMTAC slipped through the cracks with an over the barrel line of suppressors. A friend of mine asked me to try his latest OTB (Over The Barrel) design, the Helix OSS. My HK91 has only about 4.25” of barrel between the muzzle and the front sight. The weight of the silencer as well as the muzzle device is a bit higher than I’d like to see, but in the end, the suppression levels from the Helix series are worth of a hard look if you are in the market for a rifle suppressor. This suppressor is very quiet compared to my AAC M4-2000. ... but I am looking for the best way to suppress my 300BLK with short barrel and I thought the OSS might be a viable option for me, thank you. MANTIS Series. I want a 10.5 inch barrel and their over barrel … There were no issues regarding first round pop. we keep meaning to take a look at Amtac, but as other folks have said already, the market appears to be moving away from OTB designs unless you have a specific desire/need for one. to do this they have to sacrifice some sound suppression. The testers over at OSS slapped a flow-through suppressor on the rifle and the results are remarkable. Over-barrel suppressors have to fit over your rifle’s barrel and thread securely into place without touching the gas system on semi-auto rifles. Jan 31, 2016 - OSS Mission Sound Suppressor System - 5.56 Over the Barrel or Flush Mount. There is a Fat B* that a few of these guys use, which is 1.115” diameter. OSS ELITE EL 556k 5.56 OVER BARREL SUPPRESSOR 1078. MANTIS SERIES. So it gives far more time (relatively speaking) for the gas to escape out the front of the barrel/suppressor, and for pressure in the barrel/chamber to get closer to normal. So suppression is less than traditional baffle stack suppressors but this is to be expected — they are trying to eliminate backpressure and cyclic rate changes. The 556k is 5.7-inches long and weighs 15.5-ounces and has a 1.62-inch diameter. So, if OSS made a BPRM for the G3/HK41/HK91 it could not be as long. The BPR1™ Over The Barrel suppressor offers several mission enhancing capabilities. OSS Suppressors Helix-QD Features: https://osssuppressors.com/OSS’s patented Flow-Through® technology is revolutionizing the suppressor industry. An over barrel suppressor. Hey, we aren't complaining either! This device, typically cylindrical in shape, attaches to the muzzle of a pistol, submachine gun, or rifle.Some "can"-type silencers (so-called as they often resemble a beverage can) may be detached by the user and attached to a different firearm. LEARN MORE. Traditional suppressors add length, weight, and increase gas blowback when used on direct impingement rifles. Jun 17, 2017 - OSS Mission Sound Suppressor System - 5.56 Over the Barrel or Flush Mount. by Nick Irving Apr 16, 2013 Share This: I recently had a chance to work with the O.S.S. Please select your location below to get a shipping quote. A shortened version of our over-barrel CQB suppressor, the CQBm features a single-piece baffle built with aerospace-grade CNC technology.The unique design adds only 3.7″ to the rifle’s length for better maneuverability. Specifications. This category covers not only 5.56 (.223), but also .30, making the suppressor Nov 25, 2017 - OSS Mission Sound Suppressor System - 5.56 Over the Barrel or Flush Mount. The difference being OTB allows us to add minimal length to your weapon, 3.9″, and transfers the axis point of your weapon back towards the center point, making it easier to control/drive your weapon. I have the Surefire FA556AR, which fits almost 4 inches over the end of the barrel. Just looking at the sound suppression, modern front mounting suppressors can be as good or even better than some of the back over the barrel suppressors. AMTAC’s line of suppresors, minus only a single model (the “SBR”) are designed to reduce the overall length of a weapon system by moving some suppressor volume to behind the threads (or “over the barrel”). Operators Suppressor Systems (OSS) has a different idea. Over-barrel suppressors designed around the AR15 platform, the CQB Series adds only 3.7” to your rifle’s overall length. Description. Jun 30, 2019 - OSS Mission Sound Suppressor System - 5.56 Over the Barrel or Flush Mount. Yes. Shorter path / less volume is potentially less effective. A Superlative Arms gas block allows you to delay the unlock of your bolt by reducing the amount of gas coming back down the tube and the pressure of said gas. The OSS HX-QD 556k is one of the most painful things to type on a QWERTY keyboard, but it is a really cool suppressor. Mar 1, 2018 - OSS Mission Sound Suppressor System - 5.56 Over the Barrel or Flush Mount. I want their 7.62 can for a 300 blk sbr build id like to do. Thanks, I had read that you tested it, but didn't see an impression of suppression level. Compatible with a mid-length gas system on a 16″ barrel, this suppressor features direct-thread attachment and can fit under most full-length free float tubes. Close. and full-auto-rated OSS HX-QD-7.62 Titanium suppressor uses the company’s patented Flow Through technology designed to eliminate back pressure by venting trapped gases out of the front-outer face of the suppressor. To address these problems, many AMTAC Suppressors feature an over-barrel design that integrates a high-volume initial blast chamber attached … Suppressor system here in Texas. Rifle suppressors, just like their rifle hosts, seem to be the sweetheart of the firearm industry. The SPR OTB (Over the Barrel) Silencer is suited to the shooter who wants the least amount of gas blowback in semi auto systems and the best sound suppression with minimal addition to weapon system length. Case in point. Luckily that barrel is a short 22” barrel that I typically run a suppressor on. 1. The latest generation of OSS Suppressors appear to be real performers that provide excellent suppression at the shooter’s ear. Murray Utah – OSS Suppressors LLC congratulates Heckler & Koch Defense Inc. on their successful Compact Semi-Automatic Sniper System (CSASS) contract bid with the U.S. Department of Defense. Available in several over-barrel and one end-mount variations, the Mantis Series suppressors let you find the ideal balance between length, weight, and sound performance. LEARN MORE. The OSS Suppressor! utilizing gen v flow-through™ technology, only the elite line delivers torture test-proven suppression, performance and durability for military and extreme bpr2the elite 7.62/.30 cal over-the-barrel (otb) suppressors are a 2-component system, featuring a With such popularity comes the trouble of choosing between all of the options. I’ve been shooting with a top shooter running that and one of the guys was giving him a hard time, saying it looked like a “sexual device” in the end of his barrel! Try a google or YouTube search for Amtac suppressors. Millcreek, UT – OSS Suppressors LLC is proud to announce that Silencer Shop, a leading gun suppressor distribution platform with an expansive silencer selection for site visitors, this week officially announced they are carrying all current OSS Suppressors on their distribution platform. The most unique features of this Sig Sauer suppressor are its Taper Lok that maximizes accuracy and alignment and easily removable wrench flats that allow you to adjust the length of the barrel at your leisure. OSS only won the contract because the HK designs do not use proper adjustable gas blocks, and are very vulnerable to increased back pressure due to the short piston design. OTB-175-4-6-556R OTB-175-4-7-556R OTB-175-4-9-556R 4 = Length Over Barrel X = Length Past Barrel Available Models: OTB-175-4-4-556R OTB-175-4-5-556R (223 Cal.) “OSS is honored to participate with and support HK’ s Program Team and their winning CSASS submission,” said John Spurrier, OSS Chief Executive Officer. And provide minimal and repeatable point of impact shift can for a 300 blk build... I have the Surefire FA556AR, which fits almost 4 inches over oss over the barrel suppressor or... 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