Brownells BRN AR-308/AR-15 Lower Vise Block Polymer Black

The Brownells BRN Lower Vise Block is a gunsmithing tool designed for AR-15 and AR-308 platform maintenance and assembly. Features a durable polymer construction that securely holds lower receivers without damaging the finish. The block fits standard vise jaws and provides stable clamping for trigger group installation, parts fitting, and general gunsmithing work. Compatible with both AR-15 and AR-308 lower receivers. Essential tool for home gunsmiths and professional armorers working on modern sporting rifles. Designed to protect receiver surfaces while providing solid work support. Lightweight polymer construction resists scratching and marring of aluminum receivers.