AR-15/M16 L5 MAGAZINE COUPLER Reviews & Ratings

Lightweight, yet exceptionally strong, reinforced polymer-and-steel clamping system joins a second AR-15/M16 30-round magazine to the one in the gun, so you have an immediate reload at your fingertips. Designed to fit the ridges molded into the Lancer L5 magazine for a non-slip installations, the cinch will also fit USGI-contour aluminum and steel magazines from other manufacturers. Includes protective aluminum spacers that prevent overtightening the clamping screws on L5 magazines.

SPECS: Reinforced, injection-molded polymer, black. Steel and aluminum hardware, black. Fits 30-roundd Lancer L5 and USGI-contour AR-15/M16/M4 magazines and clones. Instructions included.

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1 Stars

Reviews Summary

Overall, customers appreciate the fit and stability of the AR-15/M16 L5 MAGAZINE COUPLER, especially with Lancer magazines. Some reviewers mention minor adjustments are necessary for optimal performance and stability. However, issues were noted regarding the durability of the couplers when used with P-Mags and the need for clearer design instructions.

What Reviewers Are Saying

Fit and Stability

60%

Reviewers commonly emphasize the excellent fit and stability of the coupler, particularly when used with Lancer magazines. Users find the setup allows for easier carrying and accessibility of extra magazines.

Durability and Construction

30%

Several reviews raise concerns about the durability of the couplers, especially when dropped or used aggressively. One reviewer reported a breakage after a fall, suggesting that while the product is generally reliable, it may not withstand heavy-duty use as well as expected.

Compatibility

40%

There is a clear emphasis on compatibility issues, as some users indicate the coupler works best with Lancer magazines and may not perform optimally with other brands like P-Mags. This specificity affects customer satisfaction and usability across different models.

Ease of Use

50%

Many users appreciate the ease of attaching and using the coupler, allowing for effective handling of multiple magazines. However, some suggest needing time to adjust and secure the couplers properly before use.

Suggestions for Improvement

20%

A few reviewers provided constructive suggestions for improving the design, such as modifying the angle between the couplers for better clearance and ease of use across various AR and SCAR models, indicating an openness to enhancements from the manufacturer.

Customer Photos & Videos

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Magazine Cinch Brownells # 100004785

Excellent fit and stability. May need to “adjust” magwell, if present.

Would you recommend this? Yes, I would recommend to a friend

by DR. W. on November 10, 2025

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Perfect

If you're happy with Lancer Mags - quality, toughness, polymer - you'll be happy with this. I bought one coupler to test and see if I like it. Very happy. Ordering another. This will still fit into a single AR mag pouch (Bladetech) and hold 2 mags - so instead of additional pouches, can hold 2 mags per pouch (see photos). They are still easy to load ammo being attached. They seem durable - I dropped today at least 10 times from shoulder height (I'm 6'1") to snow covered, frozen ground, no issues. Will be buying another one.

sturdy

works perfect, could probably just use one of the pair, but just in case added as instructed

Coupler

Fits GI Mag very well, only minor drawbacks are one comes unassembled and they are independent which provides slightly less stability when forcefully seating the magazine in the mag well. Once you have the couplers placed on the magazines to ensure sufficient clearances, cinch the screws tightly. Load the mags and practice slamming them home a few times to ensure the mags don’t slip out of position in the couples, which could cause an issue with the extra mag touching the base of your optics or blocking the ejection port/cover and preventing proper seating of the mag. The screws and nuts are steel, so they will take the necessary torque to secure. If I could offer a suggestion to the manufacturer, it would be to change the coupler from parallel to 5-10 degree spread between the tops of the two mags to provide sufficient clearance on all makes/models of AR & SCAR platforms. Of course such a change would mean the couplers would no longer be interchangeable.

Would you recommend this? Yes, I would recommend to a friend

by Jon C. on June 01, 2024

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Was this review helpful? 1

works for what its supposed to do

If you want to carry an extra mag easily for three gun this is a good way to go. They are designed for Lancers so I can see how they wouldn't work so great with pmags or other mags (go fig as mentioned they weren't designed that way). Carrying and extra 30rd mag makes the weapon heavier and a 3 mag pouch becomes a 2 mag pouch...so personally I'd pick up a set to play with but for most situations I'd take a third mag in the pouch than two hooked together.

Does as advertized.

Works well w/ Lancer mags. just as pictured. Now I can 'cart-wheel up to 60 of them burrowing rodents without snagging a magazine from out of my pocket. Getting the 1st clamp lined up & screw started definitely harder of the pair. Haven't tried w/any other brand/model, though fitment may be issue.

Not the most durable design

I used this to attach two 30rd P-Mags for my AR. I dropped two loaded mags with the clamps, on the concrete from about waist height and one of the two clamps broke to the point that it would no longer hold the magazine. I will spend a little extra money on something a little more well constructed next time.