© MidwayUSA80Deal ScoreIn Stock
FN 36423 AR-15 5.56x45mm NATO 18″ Rifle Length Gas System, Black Phosphate Cold Hammer Forged Chrome Lined
$282.84
- Brand
- FN Herstal
- Color
- Matte Black
- Caliber
- 5.56x45mm
- Category
- Gun Parts
- Platform
- AR-15
- Barrel Length
- 18in
- Gun Part Type
- Barrel
- UPC
- 845737005146
- MPN
- 36423
Overview
The FN AR-15 barrel is 18 inches in length and chambered in 5.56x45mm NATO. It is cold hammer-forged from proprietary high-grade Chrome Moly Vanadium steel (Mil-B-11595E) and designed to withstand sustained fire. The barrel features a 1:7-inch twist rate, a rifle-length gas system, and a .750-inch gas seat diameter. Both the bore and chamber are chrome-lined for corrosion resistance and heat erosion protection. The exterior is finished in a matte black manganese phosphate, and the unit includes M4-style feed ramps and a 1/2x28 threaded muzzle. Each barrel is magnetic particle inspected (MPI) to ensure structural integrity.
Price & Stock History
Price — 90d
Listings In Stock — 30d
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