Spike’s ST9 Lower: Forged 7075 T6 with Dedicated Colt Magazine Well
Features
- Accepts Colt-style 9mm magazines
- Forged 7075 T6 receiver construction
- MIL-A-8625F Type III Class 2 hard coat anodized finish
- Bullet pictogram selector markings
- Dedicated Colt magazine well
- Built-in trigger guard
- Proprietary parts included
- Weighs 13.9 oz
The Spike’s Tactical ST9 solves the magazine compatibility challenge for shooters who prefer Colt-style 9mm magazines, which have been the standard for AR-9 builds since the original Colt SMG platform. This lower works exceptionally well for builders who already have Colt-pattern magazines or prefer the proven Colt magazine design used by law enforcement and military for decades. What sets the ST9 apart is the forged 7075 T6 construction instead of billet – you get mil-spec strength and durability at a competitive price point, and the dedicated Colt magazine well ensures proper feeding and reliable function.
Note: When using a standard buffer, use Spike’s 9mm spacer with it, or use a dedicated 9mm buffer by itself.
Specifications
- Brand: Spike’s Tactical
- Model: ST9
- MPN: STLS910
- Caliber: 9mm
- Magazine Compatibility: Colt-Style
- Construction: Forged 7075 T6
- Finish: MIL-A-8625F Type III Class 2 Hard Coat Anodize
- Color: Black
- Weight: 13.9 oz
What’s Included
- 1x ST9 stripped lower receiver
- Proprietary 9mm components







