Gemtech GVAC Upper Receiver Group - 5.56 NATO

Gemtech GVAC Upper Receiver Group – 5.56 NATO Details

Gemtech’s GVAC Upper Receiver Group is purpose-built for suppressed 5.56 performance. It combines a patented GVAC barrel profile, gas-bore evacuator system, and ETM flash hider for reduced gas blowback and recoil.

The assembly includes a mid-length direct-impingement gas system with a pinned low-profile GVAC gas block, a fully enhanced BCG, and a 15” seven-sided M-LOK free-float handguard with Picatinny top rail and QD sling sockets.

Features and Benefits

• 16” GVAC-profile barrel—optimized for suppressed shooting
• Gas bore evacuator (GVAC system) reduces gas blowback for better control
• Included ETM flash hider ensures precise suppressor alignment and carbon resistance
• Mid-length gas system with pinned low-pro gas block delivers smooth cycling
• 15” free-float M-LOK handguard with Picatinny top rail and QD sling points for modularity
• Enhanced BCG components and receiver built for durability