MBX Extreme 140mm Complete STI Style10 Round 9mm/.38 Cal

Other products by MBX Extreme

Item #: 103
Reg. Price: $130.00
Our Price: $129.00


The Next Generation of STI Style 10 Round High Performance Competition Ready Magazines:

The new MBX 10 round magazine has a 410 heat treated stainless steel body and comes with a billet aluminum tool-less basepad and premium Wolff custom spring

- A completely new 10 round design to give 100% feeding and reliability

- Ergonomically engineered for fast easy reloads and sufficient over travel to allow for easy seating when loaded to capacity

- Newly designed wolff custom 13 coil performance spring

-Slide Lock Follower or Competition Follower

- 10 round indicator hole


Average Rating:
(based on 2 reviews)

Showing 2 Reviews:

by Jose O.
on 5/10/2018
MBX 10 rnd mag
A little over rated. Not easy to load after the 6th round unlike the STI. The over all shiny body gets slippery to grab on the quick reload. I personally prefer brush or satin finish.
on 2/27/2018
Two new MBX Extreme Mags, I followed instructions, one of them is so tight I have to use a loading tool to force the tenth round in mag, I remove them, and reload the mag each day letting the rounds stay in all day, and still can have all I can do to load by hand one and the other I must use the loader. I did not put the mag in the gun first as the instructions said, so what do we do about this?

Response from Chuck- It is a 10 round mag that you can get 10 rounds in. Its made that way so to be sure it doesn't go over 10 rounds because it can be a serious issue in the 10 round states these are made for. I don't think a 4 rating is fair but that's your call. 
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