- Mil-spec Passivated Black Oxide Allen (5 PC); ¼”-28 x 5/8” Allen head
- Hex Key Size: 3/16", high grade zinc plated steel tooth lock washers included
- Great replacement for slotted / hex screw on rifle platforms
- Compatible with A2 and aftermarket including B5, BCM, Ergo, Hogue, and Magpul grips
- All screws, packaging and material made to last!
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