Armaspec SMB Buffer Kit AR9 Gen 3 – AR-9 Platform

The Armaspec SMB Buffer Kit AR9 Gen 3 reduces felt recoil and bolt bounce in AR-9 pistol caliber carbines through a captured spring design that dampens buffer movement. This kit replaces standard AR-9 buffers and springs to deliver smoother cycling and reduced wear on lower receiver components, particularly important given the direct blowback operation common to 9mm AR platforms.

The Gen 3 design uses a self-contained buffer assembly with internal dampening technology that eliminates the need for a separate buffer spring. Installation is straightforward—remove your existing buffer and spring, then drop in the SMB kit. Compatible with standard AR-9 lower receivers and pistol caliber carbine builds chambered in 9mm. Constructed from heat-treated steel and durable polymer components with a black finish.

• Type: Captured buffer assembly
• Compatible Firearms: AR-9 platform, 9mm pistol caliber carbines
• Material: Heat-treated steel, polymer
• Finish: Black
• Adjustable: No
• Installation: Drop-in replacement for standard AR-9 buffer and spring