Whether its the classic style or forward assist functionality that piques your interest, the Mk4 AR15 upper receiver assembly has been a staple in the CMMG lineup. Specifications for CMMG Mk4/AR-15 Forward Assist Upper Receiver Assembly: Manufacturer: CMMG Color: Armor Black Finish: Cerakote Fabric/Material: Forged 7075-T6 Aluminum Gun Make: AR Platform Gun Model: CMMG Mk4, AR-15 Condition: New Package Contents: CMMG Mk4/AR-15 Forward Assist Upper Receiver Assembly
1 review for CMMG Mk4/AR-15 Forward Assist Upper Receiver Assembly
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Patrick Green –
This thing is nice. Great tight fit so will be more accurate and reliable