“CMMG Receiver Extension Mk4” has been added to your cart. View cart HomeGun PartsAR Lower PartsAR Buffer SystemAngstadt Arms Hydraulic Buffer Kit 9mm Luger 6 oz Heavy DampingAngstadt Arms Hydraulic Buffer Kit 9mm Luger 6 oz Heavy Damping$143.00 Angstadt Arms Hydraulic Buffer Kit 9mm Luger 6 oz Heavy Damping Additional information UPC 850053228353 Manufacturer Angstadt Arms Manufacturer Part Number AA09HBKHDP Model Hydraulic Buffer Kit Product Type Buffer 3 in stock Angstadt Arms Hydraulic Buffer Kit 9mm Luger 6 oz Heavy Damping quantity Buy now Add to WishlistRemove from Wishlist Add to Wishlist