Stag Arms STAG-15 5.56 NATO AR-15 Rifle with 16 in Colt C MP Chrome-Lined Barrel, Flat-Top Upper, A2 Front Sight, Troy 6-Position Stock
This mixed-manufacturer AR-15 pairs a New Britain, CT–marked Stag Arms lower with a Colt-marked 16-inch chrome-lined barrel. It features a flat-top upper with T-marked MIL-STD-1913 rail, a fixed A2 front sight base with bayonet lug and sling swivel, and carbine-length polymer handguards. The Troy 6-position collapsible stock and A2-style grip round out a classic carbine setup in 5.56 NATO, gas-operated direct impingement.
Condition
Overall Condition: Poor condition.
Bore Overall Condition: Poor - Noticeable dirt, stains, significant corrosion or damage.
Bore Rifling: Poor Rifling - Rifling heavily worn or filled with fouling or debris.
Specific Condition Notes: There is widespread rust and pitting with many scratches and surface blemishes. The bore is dark and blemished. There is a large bulge in the barrel a few inches from the muzzle. The firing pin is not present.
What’s Included
- Stag Arms STAG-15 5.56 NATO semi-automatic rifle (mixed-manufacturer build)
This rifle uses a Stag Arms lower receiver marked New Britain, CT, paired with a Colt barrel roll-marked "C MP CHROME BORE 5.56 NATO." The 16-inch barrel is chrome-lined and threaded, capped with an A2-style flash suppressor.
The flat-top upper carries a T-marked MIL-STD-1913 rail (T2–T14 visible) for mounting sights or accessories. Up front is a fixed A2 front sight base with bayonet lug and sling swivel, and carbine-length, two-piece polymer handguards secured by a delta ring. No rear sight is included.
The operating system is gas-operated, direct impingement in 5.56 NATO with right-hand ejection, and includes a forward assist, brass deflector, and ejection port cover. Controls include a manual safety and an A2-style polymer pistol grip.
Furniture consists of a Troy 6-position collapsible polymer stock with an integral sling loop and adjustable length of pull. The receivers are aluminum with a Type III hard-coat anodized finish, aligning with a durable AR-15 carbine configuration.

