Maxim Defense Roller Delayed Blowback System – Carbine (9mm)
Upgrade your 9mm AR-pattern platform with the advanced Maxim Defense Roller Delayed Blowback (RDB) System – Carbine. Traditional straight blowback 9mm setups suffer from harsh recoil and fast cycling speeds. Maxim’s drop-in roller-delayed system transforms your standard mil-spec carbine-length buffer tube setup into a smooth, highly efficient roller-delayed platform. By stabilizing gas pressure before extraction, this system drastically minimizes felt recoil, reduces bolt velocity, and keeps your sights glued on target for faster follow-up shots.
Key Features & Benefits
- Dramatically Reduces Recoil: Slows down bolt opening and cycling speed to significantly soften the impulse, making it ideal for competition (USPSA/Speed Steel) and range shooting.
- Improves Overall Reliability: Stabilizes chamber pressure prior to case extraction, ensuring flawless cycling and feeding.
- Minimizes Friction: Engineered to drastically cut down the internal friction typical of heavy standard dead-blow buffers.
- Drop-In Compatibility: Designed to easily drop into most standard mil-spec AR-15 and AR-9 carbine-length buffer tubes.
Technical Specifications
- Manufacturer: Maxim Defense
- Platform Compatibility: 9mm AR-pattern firearms / AR-9 / PCC (Mil-Spec Carbine-Length Buffer Tubes)
- Config / Variant: Carbine
- Caliber: 9mm Luger
- System Weight: 8.30 oz
- Material Composition: Hardened Tool Steel










