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

Kimber 2K11 Comp F
Kimber 2K11 Comp F

New For 2026: Kimber 2K11 Comp

Kimber increased its 2K11 product line with the addition of two models with single-port compensators.

AR-15 vs. Bullpup Rifles: Which One Is Right For You?

Though bullpup-style rifle designs have become popular elsewhere in the world, they aren't nearly as popular with the American shooting public as the ubiquitous AR-15.

2025 Year-End Gun Sales Dip Ahead Of $0 NFA Tax Stamp Enactment

Firearm sales were down in December 2025, reflecting a pause that may be attributable to enthusiasts waiting for the official start of the $0 NFA tax stamp that became official in January 2026.

Preview: Muddy DV8 Enduro Jacket

The softshell component in Muddy’s all-season DV8 camouflage layering system, the Enduro Jacket is designed for warmth, water-resistance and ruggedness while also emphasizing silent mobility.

Review: Savage 110 Trail Blazer Rifle in 22 Creedmoor

Savage’s new 110 Trail Blazer rifle offers top-shelf performance at entry-level pricing.

I Carry: Springfield Armory Hellcat Pro 9 mm Pistol in a PHLster Holster

In this week's episode of "I Carry," we have a Springfield Armory Hellcat Pro 9 mm pistol with a Meprolight MPO Pro-S red-dot sight carried in a PHLster Skeleton kydex holster.

Interests



Get the best of American Rifleman delivered to your inbox.