Spikes Tactical ST-15 5.56 NATO AR-15 Carbine, 16 in Barrel, Direct Impingement, 7075-T6, A2 Front Sight, Sig ROMEO5 Red Dot
This Spikes Tactical ST-15 is a full-size AR-15 platform carbine chambered in 5.56mm NATO with a 16-inch barrel and hard-coat anodized 7075-T6 aluminum receivers. It comes ready to use with a factory-style A2 front sight base and a folding rear BUIS, plus a Sig Sauer ROMEO5 1x20mm 2-MOA red dot sight installed. The rifle includes a 30-round Magpul PMAG and features a flat-top MIL-STD-1913 Picatinny receiver rail for mounting.
The upper receiver is equipped with a forward assist, brass deflector, and ejection-port cover. The lower is marked CAL - MULTI and has three-position pictogram markings, but the receiver is semi-automatic only (no third hole). The direct-impingement gas system uses a rotating bolt, and the rifle has a maximum capacity of 30+1.
The 16-inch barrel wears an A2 birdcage flash hider on its threaded muzzle. The A2 front sight base includes a bayonet lug and a fixed front sling swivel. Two-piece polymer drop-in handguards, a collapsible 6-position stock with index numbers on the carbine receiver extension, and an A2-style pistol grip round out the carbine configuration. Sling attachment points include the front sling loop and a rear sling loop at the buttstock toe.
The included Sig Sauer ROMEO5 1x20mm 2-MOA red dot sight is installed on a riser mount. It provides 1x magnification with a red 2-MOA dot and pairs with the folding rear BUIS and A2 front sight base for a complete sighting setup. Made in the USA, this ST-15 provides a clean, practical configuration with quality components and proven features.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This firearm is in great shape. There are some minor and superficial scratches and blemishes present. The bore is clean and shiny.
What’s Included
- Optic: Sig Sauer ROMEO5 1x20 mm 2-MOA red dot with riser mount (installed)
- Sights: Folding rear backup iron sight (installed)
- 1x 30-round Magpul PMAG polymer AR-15 magazine
Sig Sauer Romeo5 1x20mm 2 MOA Red Dot Sight installed.
Built on 7075-T6 aluminum receivers with a hard-coat anodized finish, this ST-15 uses a direct-impingement gas system with a rotating bolt. The flat-top MIL-STD-1913 Picatinny receiver rail supports the installed red dot, while the A2 front sight base and folding rear BUIS provide dependable mechanical sights.
The barrel assembly features an A2 birdcage flash hider on its threaded muzzle. Two-piece polymer drop-in handguards and a collapsible 6-position stock deliver a classic carbine setup. A carbine receiver extension with index numbers, an A2-style pistol grip, and front and rear sling loops complete the configuration.
Controls and markings include a manual safety, forward assist, brass deflector, and ejection-port cover. The lower is marked CAL - MULTI with three-position pictogram markings, and the rifle is semi-automatic only. Chambered in 5.56mm NATO, it carries a maximum capacity of 30+1 and is made in the USA.