Spikes Tactical ST-15 .300 AAC Blackout AR Pistol, 8.5 in Barrel, Free-Float M-LOK, BCM BCG, Ambi Controls, SB Tactical Brace
This custom Spikes Tactical ST-15 AR pistol is chambered in .300 AAC Blackout and built around an 8.5 inch threaded barrel with a compact fluted/ported muzzle device. It features a free-float M-LOK handguard with a full-length top Picatinny rail, a BCM bolt carrier group, and ambidextrous controls. An SB Tactical stabilizing brace and Magpul pistol grip round out a practical, well-equipped .300 BLK configuration made in the USA.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Notes: This firearm is in solid functional shape. There are scratches and blemishes present.
What's Included
- 1x 30-round Hexmag HX-AR Series 2 polymer magazine
- SB Tactical stabilizing brace with strap (installed)
- BCM bolt carrier group (installed)
- Ambidextrous extended-latch charging handle (installed)
- Free-float aluminum handguard with M-LOK slots and full-length top rail (installed)
- Polymer M-LOK angled foregrip/hand stop (installed)
- Magpul pistol grip (installed)
- Compact fluted/ported muzzle device (installed)
Built on a Spikes Tactical ST-15 platform, this AR-15 pattern pistol is chambered in .300 AAC Blackout (7.62x35mm) and uses a direct impingement, semi-automatic action. The 8.5 inch threaded barrel is capped with a compact fluted/ported muzzle device, creating a compact .300 BLK package with clear caliber identification via a large red "300 BLK" magwell marking.
The upper is a flat-top Picatinny configuration with a forward assist and ejection-port cover. The free-float aluminum handguard provides M-LOK attachment slots and a continuous top rail, offering straightforward mounting for accessories. No sights are installed.
Key upgrades include a BCM-marked bolt carrier group, an ambidextrous extended-latch charging handle, and an ambidextrous safety selector for accessible controls. The pistol wears a Magpul polymer grip and a polymer M-LOK angled foregrip/hand stop.
An SB Tactical stabilizing brace with Velcro strap is installed, and the anodized aluminum receiver set is marked MOD ST15 CAL. MULTI with the Spikes spider roll mark. The right side reads "SPIKE'S TACTICAL APOPKA, FL U.S.A." The pistol accepts standard AR-15 pattern detachable magazines and ships with one 30-round Hexmag. Capacity is 30+1.