Description
A polymer magwell-insert vise block sized for AR-10 / .308 / SR-25-pattern lower receivers. Drops into the magazine well, clamps in a standard bench vise, and locks the lower flat and stable so you can install a trigger group, torque a castle nut, swap a grip, or run an upper torque without the receiver shifting under load.
Specs & features:
- Fits AR-10 / .308 / SR-25-pattern magazine wells
- Non-marring polymer construction — protects the lower’s anodizing
- Solvent-resistant — safe around CLP, brake-clean, and bore solvents
- Flat clamping faces seat in any standard bench vise
- Use for trigger installs, buffer-tube work, grip swaps, and barrel-nut torque
Insert the block into the magwell, clamp the exposed body in the vise jaws, and tighten until the lower is rigid. This block is .308-pattern only — for AR-15 / 5.56 lowers, use the standard 5.56 magwell vise block instead.
