This is a brand new Sig Sauer MCX Conversion kit to convert your MCX Rattler from .300 Blackout to 5.56mm NATO with a 5.5" Barrel or can be used as a backup barrel assembly for your existing 5.56mm Rattler. This kit will ONLY work on an MCX Rattler. If you have an MCX that is not a Rattler model this will NOT WORK on your MCX.
All NFA rules apply.
Internal Reference:
WCALX-MCX-5B-556-TAP
Barcode:
798681602810
| Brand: Sig Sauer |
| Model: MCX |
| Caliber: 5.56mm |
| Part Type: Barrels, Conversion Kit |
| Barrel Length: 5" |
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