Sig Sauer CAL-X Kit - MCX .300 Blackout - 5.5" w/ Bolt and Tapered Lug

$699.00
$549.00
Out of stock
as of 05/20/2024 11:38PM CST
Store Inventory
Available OnlineOut of stock
Fountain Valley, CAOut of stock
The Colony, TXOut of stock
SKU: SG-CALX-MCX-5B-300-T
UPC: 798681587728


Inter-Store Transfer

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Use this factory SIG Cal-X kit to convert your MCX to an MCX Rattler in .300 Blackout. Includes a 5.5" Blackout barrel assembly with tapered lug bolt. Compatible with standard AR15 magazines.

A new tapered bolt lug design results in smoother cycling and extends the bolt life.


All NFA rules apply.


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