CMMG 8" Barrel and BCG Kit 4140CM SBN 9mm Luger

Features:

• 8? Medium Taper
• 1:10 Twist
• 4140 Chrome Moly
• Salt Bath Nitride Finish inside and out
• 9×19 NATO Chamber
• Threaded 1/2-28
• Radial Delayed Blowback Bolt (Patent Pending)
• Requires enlarged ejection port for reliable operation.
• Weight: 1.7lbs