Build or refresh a carbine-length AR-15 with this FN America M16 style 10.5in barrel chambered for 5.56mm NATO / .223 Rem. It features chrome-lined chamber and bore for improved corrosion resistance and heat/erosion durability, along with M4 styled feed ramps to support consistent feeding. The barrel is button rifled with a 1:7 RH twist rate and finished in black manganese phosphate, with a 1/2x28 threaded muzzle for common muzzle device mounting.

Key features

• Chrome lined chamber and bore for corrosion resistance and heat/erosion durability
• Black manganese phosphate finish for durable corrosion protection
• 1/2x28 threaded muzzle for straightforward muzzle device setup
• 1:7 RH twist rate and button rifling for versatile 5.56mm/.223 Rem performance
• M4 styled feed ramp geometry for reliable feeding
• 10.5in M16 style barrel length for a compact carbine build

A solid choice when you want FN factory-style durability and compatibility for a short 5.56 build.