The Global Ordnance Monolithic Upper Assembly delivers precision engineering for AR-15 platform builds requiring compact barrel length with full-size performance. This complete upper receiver system combines a 12.5-inch barrel with integrated KeyMod handguard in a single machined unit for enhanced rigidity and accuracy.
What Makes This Different
Unlike traditional two-piece designs, this monolithic construction eliminates potential flex points between the barrel extension and handguard. The one-piece machined aluminum design provides a continuous platform from receiver to muzzle, resulting in improved harmonics and consistent point of impact. Standard mil-spec threading accepts common muzzle devices while the KeyMod interface offers lighter weight compared to Picatinny rail systems.Key Features
- 12.5-inch chrome moly vanadium steel barrel with 1:7 twist rate for heavy bullets
- Monolithic aluminum construction eliminates handguard-to-receiver joint flex
- KeyMod attachment system reduces weight while maintaining accessory compatibility
- Mil-spec Picatinny receiver rail accepts standard optics and backup sights
- 5.56 NATO chamber handles both .223 Remington and 5.56 NATO ammunition
- Black polymer pistol grip included for complete lower receiver compatibility
- Standard AR-15 barrel extension threads for suppressor and muzzle device mounting
Technical Specs
- Caliber: 5.56 NATO/.223 Remington
- Barrel Length: 12.5 inches
- Twist Rate: 1:7 inches
- Handguard: KeyMod compatible aluminum
- Receiver: Mil-spec Picatinny rail
- Finish: Black anodized aluminum
- Thread Pitch: 1/2x28 TPI
- Overall Weight: Approximately 2.8 pounds
