https://midstatefirearms.com/product/224-valkyrie-6-8-spc-m16-ar15-bcg-bolt-carrier-group/
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Complete Nitride M-16 Bolt Carrier Group / BCG
Caliber 6.8 SPC / 224 Valkyrie
M16 style bolt carrier
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 upper.
Machined per military print
Made in the USA
Lube is recommended.