Best Seller | Magpul Bev Block Magpul Bev Block - All-in-One Compact Vise Block Tool Ar-15/M4 - The BEV Block (Barrel Extension Vise) is an all-in-one, compact vise block tool for AR15/M4 assembly operations of barrel nuts, flash hiders, etc.Mounts securely in a vise and provides... ... more Magpul Bev Block Magpul Bev Block - All-in-One Compact Vise Block Tool Ar-15/M4 - The BEV Block (Barrel Extension Vise) is an all-in-one, compact vise block tool for AR15/M4 assembly operations of barrel nuts, flash hiders, etc.Mounts securely in a vise and provides... Sportsman's Warehouse | | $47.99 go to store |