Shop › ARMASPEC A2 SPACER FOR SRS/SMB ARMASPEC A2 SPACER FOR SRS/SMB $6.29 Armaspec A2 Spacer, Fixed Stock to Carbine Spacer, Stealth Recoil Spring/Sound Mitigation Buffer, Fits AR-15 A1/A2 Style Stocks, Black ARM154-RFL Quantity: Add To Cart Added! Armaspec A2 Spacer, Fixed Stock to Carbine Spacer, Stealth Recoil Spring/Sound Mitigation Buffer, Fits AR-15 A1/A2 Style Stocks, Black ARM154-RFL