This 11.5” chambered for .223/5.56mm heavy profile barrel comes with a Mil. Std. 1913 railed gas block. This premium barrel is machined from 4150 chrome moly Vanadium 11595E steel. It is chrome-lined in bore and chamber for long wear and ease of cleaning. The black manganese phosphate finish protects against rust and corrosion. It is button rifled at 1 turn in 9 inches or 1 turn in 7 inches – right hand twist for optimum accuracy. The muzzle is threaded 1/2” x 28 T.P.I. to accept a variety of flash hiders or muzzle brakes.
NOTICE: THIS PART MUST BE USED IN – OR WITH – A PISTOL OR TITLE II RECEIVER (NFA REGISTERED) FOR LEGALITY. This requirement is in accordance with Title 27 Code of Federal Firearms Regulations [Subpart B-Definitions (479.11) (a) thru (g) under Firearms]. For any further questions you may have concerning Local, State or Federal compliance, please contact the Alcohol, Tobacco, & Firearms Bureau. Local listings available at http://www.atf.gov/
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