Stag Arms Stag-15 Model 8 (State Compliant) 5.56 NATO, 16 in, Short-Stroke Piston, Diamondhead Sights, Magpul MOE, 10+1
This Stag Arms Stag-15 Model 8 is a piston-driven, state compliant AR-15 platform carbine chambered in 5.56 NATO. It features a 16-inch M4-profile, threaded barrel with an A2 birdcage flash hider, Diamondhead flip-up sights, and a Magpul MOE carbine-length handguard. The receiver is marked New Britain, CT, identifying it as a pre-relocation example.
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: Light handling marks are present on exterior surfaces from prior use. Please review the photos for close-up views of these areas.
What’s Included
- Original hard rifle case (plastic clamshell)
- Two 10-round magazines (one Magpul PMAG AR/M4 Gen M3 polymer and one steel AR-15 magazine)
- Diamondhead flip-up front and rear sights (installed)
- Magpul MOE carbine-length drop-in handguard (installed)
- Picatinny rail section mounted at the 6 o’clock position on the MOE handguard (installed)
- Slip-on rubber buttpad for collapsible stock (installed)
The Model 8 uses a short-stroke gas piston system, offering a clean-running operating setup distinct from direct-impingement AR-15s. Its 16-inch M4-profile barrel is threaded and capped with an A2 birdcage flash hider. The barrel is marked "5.56 NATO 1/9," indicating its chambering and 1:9 twist to pair with a broad range of common 5.56/.223 loads.
This rifle is configured as state compliant and ships with two 10-round magazines for a 10+1 capacity. It includes an ambidextrous safety selector and right-hand ejection. A single-point sling plate at the receiver end plate adds a practical attachment option for carry or support.
The upper is a T-marked flat-top Picatinny receiver with a railed gas block in the carbine position. Diamondhead flip-up front and rear sights are installed for immediate use. The Magpul MOE carbine-length polymer handguard provides a durable, heat-resistant grip area with easy accessory mounting via MOE slots and includes a Picatinny rail section installed at the 6 o’clock position.
The rifle wears a matte black finish and includes a 6-position collapsible stock fitted with a slip-on rubber buttpad and an A2 pistol grip. The receiver bears New Britain, CT markings from the pre-relocation era, a detail many buyers and Stag enthusiasts appreciate documenting on Model 8 builds.