SIG MCX Rifle: Mandatory Carriage Assembly Replacement Program

by
posted on January 5, 2017
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
sigmcx_carriageassembly.jpg

SIG Sauer is conducting a mandatory replacement of the carriage assembly in SIG MCX rifles. According to a statement from SIG Sauer, SIG has found through extensive factory testing that in extremely rare instances, not reported in the field and extremely difficult to replicate, a condition may exist causing an unintended discharge. Failure to follow the loading procedures and basic rules of safe firearms handling outlined in the user's manual has the potential to cause serious bodily harm or death. Although this has only been witnessed in 300 blackout, SIG has decided to upgrade all MCX models since the MCX is a modular platform and to ensure the quality and reliability of all products they manufacture. Certain serial numbers are exempt from this program

If you own one of these firearms, a SIG Sauer has issued these instructions:
Stop use of firearm immediately, and visit the SIG Sauer website as soon as possible to register your firearm, initiate the process and view a video explaining how to change out your carriage assembly. SIG will send you a prepaid box to return your complete carriage assembly to the factory. A new assembly, designed with the firing pin locking mechanism, will be shipped out to you within five to seven working days of the receipt of your parts at no cost to you. SIG will also send you a $50 gift voucher for any inconvenience this may have caused. This upgraded carriage assembly addresses this potential issue while enhancing the performance and longevity of your rifle. 






For all of the details relating to this issue, visit sigsauer.com

Latest

Gotw Wilson Combat Divison 77 Project 1 Web
Gotw Wilson Combat Divison 77 Project 1 Web

Gun Of The Week: Wilson Combat Division 77 Project 1

Join American Rifleman staff on the range in this video to get a closer look at Wilson Combat’s somewhat cryptically named “Division 77 Project 1.” 

The Armed Citizen® July 18, 2025

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Review: POF-USA LMR BASE Rifle

The Patriot Ordnance Factory LMR Base offers a .308 Win. chambering in a lightweight, AR-15-size package, which makes it a capable platform for today's new gun owner. And it comes at a fair price.

2025 Accessory Of The Year: Wyoming Sight Drifter

For each of the past 23 years, the editors of American Rifleman have convened to select our top picks for the past year’s best and most innovative products. Here are the most recent winners.

Henry Donates Rifles To Support Young Leukemia Victim

Henry Repeating Arms has donated a limited run of 50 “Team Keane” Golden Boy .22 lever-action rifles to support 13-year-old Keane Rhodes of Universal City, Texas, who is currently undergoing aggressive treatment for ALL T-cell leukemia.

Rifleman Review: Springfield Armory Echelon

Springfield Armory introduced its Echelon in 2023, bringing a modernized, chassis-style, striker-fired handgun to the market that has since seen several notable line extensions.

Interests



Get the best of American Rifleman delivered to your inbox.