$40.00
In stock
Easily adapt your standard Sig Folding hinge to an M4 receiver extension/ buffer tube for use with a variety of stocks.
Requires a mil-spec M4 receiver extension and castle nut.
-6061 aluminum Type III anodize hardcoated in black
-Lightweight at 31 grams
-Fits Sig folding hinges
-Includes 1/4″ – 28 mounting bolt
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