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USGI AR15 MCL 10/30 Limiter

Product code: MCL_USGI_10_30

Availability: In stock

  • Buy 3 for $4.49 each and save 25%
  • Buy 10 for $4.25 each and save 29%

Quick Overview:

Magblock 10/30 USGI MCL (Magazine Capacity Limiter) for AR15/M16 Magazines

- For use in USGI type 30 round magazines for the AR15/M16. 
- Will also fit SCAR 16 GI Magazines.
- These blocks will convert a 30 round magazine to hold only 10 rounds.
- Works great Magpul anti-tilt followers.
- Fits Brownells, C-Products, ACS, D&H, NHMTG, Colt, and most other metal .223/5.56 mm 30 round magazines.

-Original military style green USGI followers may need to be trimmed or replaced to work properly. If your followers have a green spike in the middle this will have to be cut down to work properly. Please see the training video section or the other photo here for instructions on how to do this. The link to the FAQ section also provides more information. 

- See our FAQ section for details about using with Magpul Ranger Plates and L-Plates. 
We have found two different methods that can be used for USGI Ranger Plates and L-Plates. We have added custom options below to buy with the bottom locking tab still in place (Method #1), or converted for use with both parts of the Ranger/L-plate as Magpul intended. You can also convert them yourself using the pictures in the FAQ section as a guide. 



Magblock 10/30 MCL (Magazine Capacity Limiter) for use in most USGI 30 round magazines in .223/5.56mm. This block will convert a 30 round magazine to hold only 10 rounds. Magazines can be loaded with the bolt closed and we have options available for use with Magpul Ranger Plates and L-Plates.

USGI refers to "United States Government Issue" type magazines. These are standard metal magazines made of aluminum or steel. 

Additional Information

Custom design No

Customer Reviews

Review by Gore
Converted a bunch of 30s to 10s. Very easy to do but involves some hands on with a dremel or wire cutters for the green USGI followers. There is a YouTube video and info on FAQ. Snipped off the middle post under the green follower. Buffed it with some sandpaper to get rid of rough edges and assembles the magazine. Tested and on a few had to cut the post a little extra. Better to start with cutting highter then lower. Worked fine. Definitely easy but hand on. (Posted on 7/3/2018)
Review by Sakaeo
Great way to convert your 30's to 10 rounds. Also works in Orlite mags. (Posted on 12/15/2013)

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