CMMG Low Profile Gas Block .936 Inside Diameter Available to order on-line. Ships in 5-14 days $39.10
CMMG Multi Role Profile Barrel Sub-Assembly 4140CM .300 AAC Blackout 12.5 Inch 5/8-24 Threads Salt Bath Nitride Finish Available to order on-line. Ships in 5-14 days $190.91
CMMG Gunbuilder's Lower Parts Kit - AR-15 with Ambidextrous Selector Available to order on-line. Ships in 5-14 days $85.26