Customer requests build-out of H&R A1 upper receiver into Dissipator configuration. Live fire function test with (Store Brand AR-15) SAR-XV Mod3 select fire lower. Configuration included turning the barrel gas block journal to accommodate the 0.625″ Seekins adjustable gas block and A1 “gas” block to support the front handguard retaining ring. Finished the barrel strong with Cerakote.
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