Product Description
Rainier Arms Select Barrel, M16 A1 profile, 1/7 Twist, 5.56 Chamber, 5 land polygonal bore.
Specifications
- 416 Ordnance Grade Stainless Steel Match Grade Blank
- Length: 20"
- Twist: 1:7
- Thread Pitch: 1/2 X 28
- .625 Gas Block Seat
- 5.56 NATO Chamber
- 5 groove polygonal rifling by Carl Caudle
- Rifle Gas System (Gas Tube not Included)
- M4 Feed Ramps
- M16A1 Contour
- Nitride Finish
- A1/A2 Height FSB installed with taper pins
- Weight: 1 lb 14.9 oz