SPARTAC MFG SM-15 .300 AAC Blackout AR-15 Pistol, 10.5 in, Direct Impingement, Free-Float M-LOK, Threaded Barrel, SB Tactical Brace, Upgraded Flat Trigger, Purple Buffer Tube, 2 Mags
This SPARTAC MFG SM-15 is a semi-automatic, AR-15–pattern pistol chambered in .300 AAC Blackout with a 10.5-inch threaded barrel and a direct-impingement gas system. It stands out with an upgraded flat-faced trigger and an anodized purple carbine buffer tube, paired with an SB Tactical adjustable brace. A free-float M-LOK handguard with a T-marked full-length 1913 top rail, polymer flip-up sights, and an installed two-prong flash hider round out a practical, custom-configured build.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Some markings from previous handling and use are present. The bore is bright and clean. Refer to pictures.
What’s Included
- 2x 30rd polymer Magpul PMAGs (marked 5.56x45)
- Owner's manual
- Polymer flip-up front and rear sights (installed)
- Polymer angled foregrip (installed)
- SB Tactical adjustable pistol stabilizing brace (installed)
- Aftermarket flat-faced trigger shoe (installed)
- Anodized purple carbine receiver extension/buffer tube (installed)
The SM-15 combines a .300 AAC Blackout chambering with a 10.5-inch barrel and a direct-impingement system for a compact, AR-15–pattern pistol configuration. The barrel is threaded and capped with a two-prong flash hider. It accepts standard AR-15/STANAG magazines with a typical capacity of 30+1.
A free-float aluminum M-LOK handguard supports modern accessory placement while keeping weight forward of the receiver. The T-marked, full-length 1913 Picatinny top rail provides continuous alignment across the upper and handguard. Polymer flip-up front and rear sights are installed, along with a polymer angled foregrip.
Key custom touches include an upgraded flat-faced trigger that promotes a consistent trigger press and an anodized purple carbine buffer tube that sets this pistol apart visually. Control and support are enhanced by the SB Tactical adjustable pistol stabilizing brace with a hook-and-loop strap, plus an A2-style polymer pistol grip.
Both upper and lower receivers are aluminum with a matte black anodized finish. The lower is roll-marked SM-15 MULTI, and the receiver is marked SPARTAC MFG, Largo, FL. This U.S.-made pistol ships with two 30-round Magpul PMAGs noted as marked 5.56x45.