High-quality barrels improve accuracy while maintaining the mil-spec look and feel. Front sight tower and barrel nut are pre-installed for ease of installation (sight post, spring and detent must be purchased separately). Each barrel is stress relieved, headspaced and phosphate finished, ready to fit to your rifle. Button rifled with versatile 6 groove, 1-9" twist to stabilize a wide range of bullet weights. All, except BL-11-M4 and BL-AP4, are heavy barrel contour, turned to .960" diameter under the handguards, with bayonet lug and ½"-28 threaded muzzle. BL-10P and BL-11P have crowned muzzle and no bayonet lug. Carbine-style BL-11-M4 is .640" diameter under handguard. BL-12B is 11½" long and BL-AP4 is .700" diameter under the handguard and 14½" long to provide a more compact, maneuverable package for M4 carbines; all NFA rules apply.
SPECS:
4140 chrome moly steel. Matte dark gray manganese phosphate Parkerized finish. BL-10/BL-10P – 20" (50cm) long. BL-11/BL-11P/BL-11-M4 – 16" (40cm) long. BL-12B – 11½" (29.2cm) long, uses standard carbine length handguard and gas tube. BL-AP4 - 14½" (36.8cm) long; carbine-length gas tube and handguard required. Not chrome lined; chrome-lined barrels available by special order only.
Catalog page 16, 570, 569