OSS BPR Suppressor System

OSS BPR Suppressor System - Each Purchase Supports the ASA

Experience a moment in silencer-evolution with the OSS BPR (Back Pressure Regulator) system. Over a decade ago, the industry's most advanced suppressor was designed to eliminate gas blowback while still suppressing the host firearm. Unlike traditional baffle-stack suppressors that force gas back into your rifle's action, the OSS BPR redirects propellant gases away from the shooter, ensuring cleaner operation, reduced fouling, and significantly less facial gas exposure. This was the can that started it all, and now is your chance to pick up one of the most influential silencers in history.  

As this is a legacy item, suppressors may have slight cosmetic blemishes.  Each silencer has been hand-selected and evaluated by our team to ensure proper fit and function.  

Why Choose the OSS BPR Suppressor System?

Eliminates Gas Blowback. The legendary flow-through design redirects gases forward and away from the shooter, virtually eliminating the face full of gas that plagues traditional suppressors.

Reduces Weapon Fouling by 60-70%. By controlling back pressure at the source, the BPR system keeps propellant residue out of your bolt carrier group, chamber, and receiver. 

Modular Signature Reduction. Pair your BPR core with optional Signature Reduction Modules (SRMs) in various lengths to balance suppression performance with overall system weight and length.

Over-the-Barrel Configuration. OSS's innovative OTB (over-the-barrel) design extends back over a portion of the barrel rather than adding pure muzzle length. 

Maintains Weapon Reliability. Lower back pressure means your rifle's gas system operates closer to factory specifications. Reduce bolt speed increases, minimize felt recoil, decrease stress on internal components, and improve overall reliability.

Built for Professional Use. Developed by Operators Suppressor Systems for demanding tactical applications, the BPR system delivers consistent performance across extreme temperature ranges, high round counts, and varied ammunition types.

Features

• Flow-Through Technology. The BPR core redirects gases forward, eliminating gas blowback.
• Maintains neutral gas system pressure on the host weapon
• Modular Construction
• User-serviceable design for field maintenance
• Over-the-Barrel Design
• High-grade stainless steel and Inconel construction
• Full-auto rated for sustained fire
• No barrel length or ammunition restrictions
• Direct-thread mounting (1/2x28 on 5.56 models, 5/8x24 on 7.62 models)

What's Included

• OSS BPR suppressor core unit
• Signature Reduction Module (SRM)
• Owner's manual with maintenance procedures
• Protective storage case

Available Models

• 7.62 BPR 1425 with 6" SRM Module
• 5.56 BRP 1275 with 6" SRM Module
• 5.56 BRP 1200 with 6" SRM Module
• 5.56 BRP 1425 with 6" SRM Module
• 5.56 BPR 1425 with 4" SRM Module

Why Buy from Capitol Armory?

Capitol Armory is America's premier NFA dealer, serving customers in all 42 suppressor-legal states with expert guidance and an unmatched selection from top manufacturers. With every purchase of the OSS BPR Suppressor System, $100 goes directly to the American Suppressor Association, actively fighting to protect and expand your rights to shoot suppressed. Trust the team that combines industry-leading expertise with a commitment to defending your Second Amendment freedoms.