Spike's Tactical ST-9X 9mm Heavy Buffer - Stainless Steel Construction
Spike's Tactical
The Spike's Tactical 9mm Bolt Carrier is a purpose-built carrier for 9mm AR-platform builds, machined from 416 stainless steel and finished in black. Whether you're running a dedicated 9mm upper on a lower receiver or building a complete 9mm carbine, this carrier delivers the material quality and finish durability Spike's Tactical is known for. The 416 stainless steel construction resists corrosion and wear, and Grade 8 fasteners ensure critical joints stay tight through thousands of rounds.
9mm AR builds have become increasingly popular with shooters seeking a softer-shooting, lower-recoil platform that's easy and affordable to practice with. Spike's carriers are engineered to the same tight tolerances as their rifle-caliber counterparts, so you get consistent bolt lockup and reliable cycling. The black finish complements modern tactical or sport-shooting builds and hides wear well on the range.
If you're assembling a 9mm upper or swapping uppers on an existing lower, verify your upper receiver, bolt, and magazine feed system are compatible with this carrier before ordering. This carrier is the engine of your 9mm build—getting the details right pays off in reliability.
| Brand | Spike's Tactical |
| Caliber | 9mm |
| Material | 416 Stainless Steel |
| Fasteners | Grade 8 Screws |
| Finish | Black |
| Part Number | ST9BG01 |
This carrier is designed for 9mm AR-platform builds. Confirm that your upper receiver and bolt are compatible with 9mm specifications before assembly. If you're unsure, reach out to us or consult your upper receiver's documentation.
416 stainless steel resists corrosion and oxidation better than standard chrome-moly, which is especially useful if your rifle sees wet conditions or infrequent cleaning. Stainless is also easier to keep looking clean on a range carbine.
The bolt carrier is one component of a bolt carrier group. Depending on your build, you may need a compatible bolt, firing pin, and cam pin. Check your upper receiver and parts kit specifications to confirm what else you need.