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Sig Sauer
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Sig Sauer MCX conversion kit to .300 BLACKOUT with a 9" barrel and tapered lug. This caliber exchange kit works with both MCX rifles and MCX pistols.
CALX-MCX-9B-300-TAP-Sig
798681579570
CALX-MCX-9B-300-TAP
.300 BLACKOUT
New
Caliber Exchange Kit
