Magazine, for STI 2011® .40 S&W/10mm Pistols, 20 Rds, 140mm, with Competition Follower, by MBX Extreme

3 Reviews
Staccato 2011
.40 SW
20 Rounds
CA; CO; CT; DC; DE; HI; IL; Deer Field; Oak Park; Homewood; Markham; Melrose; Highland; Orland; University; MA; MD; NJ; NY; RI; VT; WA
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Proven High Performance Competition Ready Magazine for STI/SV and All 2011 Pistols!

Magazine Details:

  • The MBX tube features designed body contour running the full length of the magazine for proven IMROVED RELIABILITY and PERFORMANCE.
  • Allows for a wider follower to IMPROVE STABILITY that features ROUND LOCATION HOLES for 10 and 24 and PRECISION CUT FEED LIPS.

**For competition use ONLY! This will NOT lock back the slide!

**These magazines are RESTRICTED in some states. Your order will be CANCELLED if you are in a high-capacity restricted state.


Write A Review
  1. Quality

    Posted by Leo on Jun 15th 2023

    I ordered my magazines with the standard slide stop follower. And thought for $130 dollars these have to be as good as the Staccatos. I was wrong. The followers look 3D printed, they're rough and uneven finish prevents them from protruding properly to engage the slide stop. Once I sanded them smooth it still only partially engages. The feed lips will also need to be adjusted. The poor quality molding on the follower causes the spring to be off centered in the follower causing it to tip forward, I've had this issue in my 10mm magazines as well as my .45 mags. Stupid of me to by from them twice. I'll be purchasing STI components to hopefully get them working. Do yourself a favor, save some money and buy something of quality like Staccato. Unless you like working on your mags and spending twice the money

  2. Flawless

    Posted by Joe on Apr 3rd 2017

    Bought these with my STI Edge. Follow the directions and load them to capacity and let them set. They have been absolutely flawless.

  3. Must have

    Posted by Eddie on Mar 1st 2017

    These mbx magazines come ready to go! The base pads remove easily and they hold 20 rd of pure excitement! What's there not to like