Lower Receiver Polymer Vise Block for AR15 / M16 Platforms

The IMI Defense™ Lower Receiver Polymer Vise Block is a heavy-duty firearm maintenance tool engineered to securely support AR15 and M16 lower receivers during assembly, cleaning, maintenance, and repair operations. Designed for professional armorers, gunsmiths, and firearm enthusiasts, this vise block provides a safe and reliable solution for securing the rifle without damaging the receiver or firearm finish.

Constructed from high-strength unbreakable urethane polymer, the vise block absorbs clamping pressure directly, helping prevent crushing, twisting, distortion, or finish damage while working on the rifle. Its durable polymer construction is specifically engineered to withstand heavy bench vise pressure and repeated maintenance use in demanding workshop environments.

The block inserts directly into the magazine well from either the top or bottom, where the rifle’s magazine catch securely locks onto the block for stable retention. Once mounted in a standard bench vise, the rifle remains firmly secured for safe and efficient assembly, disassembly, cleaning, and repair procedures.

Designed for ease of use and rapid setup, the IMI Defense™ Lower Receiver Polymer Vise Block allows users to quickly secure the firearm without requiring specialized tools or complicated installation procedures.

Used together with the IMI Defense™ Upper Receiver Vise Block, this system provides a complete professional solution for AR15 and M16 platform maintenance and gunsmithing.

Features & Benefits

• Heavy-duty lower receiver vise block
• Compatible with AR15 and M16 lower receivers
• Durable unbreakable urethane polymer construction
• Helps prevent receiver crushing, twisting, or distortion
• Protects firearm finish from marring and scratches
• Secure magazine well locking system
• Inserts from top or bottom of magazine housing
• Compatible with standard bench vises
• Ideal for assembly, cleaning, repair, and maintenance
• Quick and easy setup
• Designed for professional and recreational firearm maintenance
• Complements the IMI Defense™ Upper Receiver Vise Block