The Spike’s Tactical ST-9X 9mm Heavy Buffer is engineered to reduce bolt bounce and smooth cycling in AR-pattern pistol caliber carbines chambered in 9mm.
- Type: Heavy Buffer
- Compatible Firearms: AR-9 Pistol Caliber Carbines (9mm)
- Material: Tungsten weights, steel housing
- Finish: Manganese phosphate
- Adjustable: No
- Installation: Drop-in replacement for standard carbine buffer










