AR-15 223/5.56 Nitride Bolt Carrier Group

AR-15 223/5.56 Nitride Bolt Carrier Group.  SKU BCG223

BCG Bolt Carrier Group for AR-15 223/5.56 with Nitride finish.
• .233/5.56 NATO
• Magnetic particle inspected
• 8740 steel firing pin with hard chrome finish
• 4140 steel cam pin
• MIL-SPEC gas rings
• MIL-SPEC O-ring
• 4140 steel extractor
• Carpenter 158 steel bolt
• 9310 steel carrier
• M16 cut
• Salt bath nitride finish
• Made in the U.S.A.