Armalite's barrels are custom-made for extreme accuracy and long life.
This complete target barrel assembly includes a MIL-STD 1913 rail gas block, barrel nut, gas tube and handguard cap.
Model: M-15 target barrel assembly
Caliber: 5.56X45 mm / .223
Barrel: 20" triple lapped, AISI 416R stainless steel, M-4 feed ramps
Rifling Twist: 1:8" RH
Muzzle Device: None
Front Sight Base: Gas block with MIL-STD 1913 rail. Top of gas block is .293 (+/-) lower than top of upper receiver