I have a 16 inch 5.56 barrel for Sig MCX that has never been shot and is in perfect condition. I bought this for my MCX 300 Blackout pistol, but never used it. Includes barrel, piston, and flash hider.

$375.00

Part number and description -
WCALX-MCX-16B-556-TAP
Sig Sauer MCX Conversion Kit (Tapered Lug) - 16" 5.56mm NATO

Photos available if interested

This message has been edited. Last edited by: dwypd,