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Overview
The CMMG 55D590A Barrel Sub-Assembly is a premium AR-15 barrel featuring a 16.1" length, chambered in 5.56x45mm NATO (.223 Remington) with a midlength gas system.
Key Features
- 416R stainless steel construction with a bead blast finish
- 16.1-inch barrel, medium taper profile
- 1:7" twist rate for stabilization across a wide range of bullet weights
- Midlength gas system with a 0.75-inch gas journal
- Includes a properly installed and headspaced M4 barrel extension
- 1/2-28 threaded muzzle
Specs
- Brand: CMMG
- MPN: 55D590A
- UPC: 815835016160
- Caliber: 5.56x45mm NATO / .223 Remington
- Barrel Length: 16.1"
- Profile: Medium Taper
- Gas System: Midlength
- Gas Journal: 0.75"
- Twist Rate: 1:7"
- Thread Size: 1/2-28
- Compatible With: AR-15 upper group rifle
Specifications
- Manufacturer:
- CMMG
- Category:
- barrel
- Caliber:
- 5.56x45mm NATO
- Platforms:
- AR-15
- Interfaces:
- Muzzle thread: 1/2-28
- Weight:
- 33.6 oz (2.10 lbs)
- Length:
- 16.1"
- Estimated velocity:
- 2,650-3,025 fps
- UPC:
- 8258545385594
- MPN:
- 55D590A
- Required Component:
- Yes
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