The MGI Hydra Quick Change Barrel Monolithic Upper Receiver features an integrated quad rail free float handguard that has been optimized for compatibility with gas piston conversions. The innovative quick change system is compatible with standard AR-15 barrels which gives the operator the widest selection possible when choosing a barrel. Precision machined from aircraft aluminum and hard coat anodized to military specifications.
Manufacturer confirmed compatibility with CMMG gas piston system
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