Real Avid Smart-Fit AR-15 Lower Receiver Magazine Well Vise Block

The Smart-Fit AR15 Vise Block is the last lower vise block you'll ever need. The patent pending block expands to fit any .223 / 5.56mm AR15 magwell, making loose, sloppy fitting blocks a thing of the past. Insert the block into the magazine well and simply rotate the adjustment handle to tighten the fit.

Specifications and Features:

• Adjustment handle rotates to expand block for precise fit
• Pivot lock holds gun open to optimal cleaning position
• Secure fit improves accuracy during lower receiver builds
• Versatile design accepts inverted lower receiver for pistol grip installation

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