OSS 5.56 OTB suppressors are a 2 component system featuring:
? Back Pressure Regulator (BPR)
? Signature Reduction Module (SRM)
Carbine models include the BPR1-12, BPR1-13, BPR1-14, BPR1-15, BPR1-16.
SRM models include the SRM-3, SRM-4, SRM-5, SRM-6 and SRM-4-MG.

5.56 OTB suppression systems are customized for a wide range of 5.56 platforms including Bulpup style rifles like the Tavor and Aug, and popular semi-automatic platforms including AR-15, FN SCAR, ACR, and many others. All of the BPR1 series models in this caliber set will accommodate the majority of platforms as mentioned. The BPR1 systems in this caliber set will fit over any barrel .750″ or smaller. If your barrel is thicker than .750″, navigate to our 7.62 Bolt Action suppressors to find models that can accommodate thicker barrels designed for lower rates of fire.

Superior Performance
? Less than 5% bolt velocity increase fully suppressed
? Less than .5 MOA / .15 MIL POI shift
? Reduction of visual signature-less than .02 Lux of flash
? No initial bloom or secondary flash
? Low pressure, low temperature solution-1/3rd the operating pressure, 30% lower operating temperature
? 90% reduction of high velocity toxic gasses expelled at the shooter
? Hearing safe at the shooters ear
? Octagon design for enhanced mirage mitigation

Superior Modularity
? Quick Disconnect (QD) self-torqueing design
? Caliber convertible
? Interchangeable Signature Reduction Modules (SRM) providing multi-mission capability
? Customizable interior design enables tuning specific suppressors for specific platforms
? Allows for full use of SIM/UTM and frangible ammunition

Superior Sustainability
? User serviceable in the field
? 100% sustainable and serviceable
? Will not degrade rifle service life