50 Bcg
It works great but it needed alot of oil to work good.
Product Details
Complete AR-15 Bolt Carrier Group with Nitride finish
Carrier made out of 8620
Bolt made out of 9310
includes bolt, carrier, firing pin, firing pin retaining pin, cam pin and gas key. This product is completely assembled and ready to drop into your mil spec upper.
Machined to be able to run steel case ammo
Caliber 50 Beowulf
Made in the USA
Delivery available throughout the United States. Tax applied to orders delivered to Minnesota addresses.
It works great but it needed alot of oil to work good.