This Spike’s Tactical complete upper receiver assembly is chambered in 5.56 NATO and features a 14.5-inch barrel with a pinned and welded muzzle device to meet the legal 16-inch minimum barrel length requirement.
- Caliber: 5.56 NATO
- Type: Complete Upper Receiver Assembly
- Compatible Lower: Mil-spec AR-15
- Barrel Length: 14.5″ (pinned & welded to 16″)
- Material: Forged aluminum receiver
- Handguard: Free-float rail
- Includes: Barrel, bolt carrier group configuration varies by model
- Installation: Drop-in to mil-spec lower, two takedown pins
