AR-15 Bolt Carrier Group Case
thingiverse
Case to protect your bolt carrier group when transporting it for any reason outside of your firearm. This works well if you like to keep your BCG lubricated and don't want it making a mess inside of your bag and loosing all the lube off the BCG. Made to fit a Mil-Spec BCG. Fits exact, but not too snug the BCG will get stuck. I use this because I have a 22LR Conversion Kit and need to swap the BCG when changing calibers. I don't want my BCG laying around just anywhere at the range after swapping.
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