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FCD Low Profile Duty Magazine Catch by johnchip, Verified Owner, October 27, 2026
I have been on a FCD binging spree now that OP has their products listed. I bought 5 of these and a few ambi mag release versions. Like all FCD products, the Low Profile Duty Magazine Catch is exceptional in quality, highly functional and looks very ...
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Gun Make:
AR Platform
Gun Model:
AR-15, M16
Color:
Black
Finish:
Nitride

Code: 6QG-MRC-FCDN78-LMC

MPN: LMC

UPC: 686162347919

List: $35.00
$34.99

Product Info for Forward Controls Design Low Profile Duty Magazine Catch

LMC (Low profile, duty, Magazine Catch) is a non-ambidextrous magazine catch for AR15/M16. LMC was not designed for large frame ARs, the shorter shaft feature is designed with AR15/M16 width lower receivers in mind. The winterizing feature similarly only works on AR15/M16 lower receivers.image

How much thought can one put into an AR15/M16 non-ambi mag catch? A lot.

LMC is based on the development of the EMR-A (Enhanced Magazine Release, Ambidextrous), and is centered around mitigating accidental / unintended magazine drops.

NOTE: LMC is designed for TDP spec M16s and AR15s. None of LMC's features are beneficial on large frame AR style lower receivers. 308 AR spec mag catch shaft is longer, LMC's is shorter than TDP spec in order to lower the magazine release button's installed height. The winterized feature is wildly inconsistent on 308 ARs to the point of that feature being useless due to the varying dimensions of large frame ARs. The longer catch on the plate is lengthened from TDP spec, and doesn't apply to 308 ARs. In short, do not use LMC on large frame, or 308 ARs.

WARNING: California`s Proposition 65

Specifications for Forward Controls Design Low Profile Duty Magazine Catch:

Manufacturer: Forward Controls Design
Gun Make: AR Platform
Gun Model: M16, AR-15
Color: Black
Finish: Nitride
Fabric/Material: 4140 Steel

Features of Forward Controls Design Low Profile Duty Magazine Catch

  • 0.01in longer catch (LMC's 0.06in vs. TDP's 0.05in length) that engages the magazine's catch cutout window
  • Shorter (by 1 full turn of the magazine catch) shaft that lowers the installed height of TDP spec magazine release button on the right side of the lower
  • Winterized design to mitigate water pooling in wet and freezing temperatures

Package Contents:

  • Forward Controls Design Low Profile Duty Magazine Catch

Forward Controls Design Low Profile Duty Magazine Catch Orderable Models

List of Orderable Models

  • Forward Controls Design Low Profile Duty Magazine Catch, Black, LMC , MPN: LMC , UPC: 686162347919 , Code: 6QG-MRC-FCDN78-LMC
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Last updated 2026-10-27 UTC.