OSS has a unique suppressor design. It is not a baffle design but something along the lines of a jet turbine. There are coils that allow the gas to expand in a different method and flows out the front of the can. This design allows the gas to vent away from the muzzle and so you do not get the stereotypical increase in pressure in the bore or the gas system. Which usually results in higher rate of fire and gas blown back into the shooter’s face. In some instances the OSS suppressor has removed gas and pressure to decrease bolt velocity.
OSS collaborated with Battlefield Vegas. We were shooting in their indoor range. It is a very small range considering the weapons we were using inside.
Below are the variety of weapons available to be shot. Funny enough, none of these have a standard length 16″ barrel. They were all 14.5″ or less. Other than the Barret and Desert Tech bolt guns.
Yes, that is a Barret MRAD in .338 Lapua. It sounded like an non-suppressed .22LR when we shot it with ears off.
OSS even brought out their testing equipment to illustrate to people the velocity, heat, and sound tests they run.
The OSS cans come in two flavors. Over the barrel and flush mount. With an over the barrel design, the BPR (Back Pressure Regulator) screws onto the barrel but the majority of it sits behind the muzzle. Then the SRM (Signature Reduction Module) is threaded onto the BRP. There are 5 different length BPRs and 4 different length SRMs. There are 20 different combinations you can make by changing them.
The BRP alone will take the edge off the muzzle report and screws directly onto the threads of the barrel. There are no shims or adapters needed. The BRP is the registered component. And since it sits behind the muzzle, if there is a baffle strike or something else catastrophic happens, then it will most likely happen to the SRM at the end. The entire device, BRP and SRM, are completely serviceable.
After testing a non-suppressed AR SBR and then the same gun suppressed by OSS, I moved onto the big guns. Full Auto M249 with their new MG suppressor, a Barret MRAD (I didnt have video of it so I used my friend), a .300blk just to see how quiet it was, and then a SCAR 17S.
I got a chance to shoot a Beretta ARX last Monday during Media Day At The Range, however you do not get to appreciate the suppression when you are out doors and shooting a normal AR style rifle. Running the gamut of large calibers and full auto provides a LOT more feedback and gave me new perspective on how amazing the OSS suppressors are.