Maxim Defense Industries AR-9 CQB Stocks Roller Delayed Buffer System Features The Maxim Defense Roller Delayed Buffer System replaces a straight blowback 9mm AR buffer with a roller-delayed mechanism that holds the bolt closed slightly longer letting chamber pressure drop before extraction begins. This delay reduces the sharp fast recoil impulse typical of straight blowback 9mm carbines giving the shooter a smoother more controllable shot cycle. The reduced bolt velocity also lowers wear on internal components over time improving long-term reliability. Because the system manages pressure more efficiently it is noticeably easier to run suppressed with less blowback and gas forced toward the shooter. Machined from steel and finished in silver the buffer weighs 8.3 oz and is designed to work exclusively with Maxim Defense CQB length buffer tubes ensuring a precise purpose-built fit rather than a generic aftermarket match. Installation is straightforward for anyone familiar with AR-pattern buffer systems dropping into the existing stock and buffer tube assembly. This exclusive compatibility means shooters should confirm their host rifle uses a Maxim Defense CQB stock or brace before purchasing. For 9mm AR-9 platforms built around Maxim Defense CQB furniture this buffer system delivers a genuine upgrade in recoil control and reliability. Maxim Defense Industries AR-9 CQB Stocks Roller Delayed Buffer System Specifications Manufacturer: Maxim Defense Industries Model: Roller Delayed Buffer System Type: Buffer Caliber: 9mm Compatible Hosts: AR-9 Maxim Defense CQB Buffer Tube Material: Steel Color: Silver Weight: 8.30 oz Available At: GrabAGun