Brazos Super-Tuned Magazine, 40/140mm

The Brazos Super-Tuned magazine uses all premium parts.  It starts as an STI GEN2 tube and a Grams spring/follower kit.  Then you select either a Dawson or Taran Tactical Innovations (TTI) basepad.  These parts are assembled and tuned for reliability and maximum capacity. 

Tube dimensions (inside and out) are set for maximum feeding reliability.

• Lips of the tube are set to optimum specifications and polished.
• All sharp edges are rolled.
• The tube is polished both inside and out to a high gloss, slick finish.
• Magazines are tuned to fit the U.S.P.S.A. gauge.  The 140mm mags will hold 20+1 rounds of 40 cal or 21+1 rounds of 9mm/38 Super.

 Maximum capacity is the same with any of the available basepads.  Which basepad is a matter of personal choice.  Both the Dawson and TTI basepads are made of aluminum.  If you are using these mags in a gun with a steel grip only the Taran Tactical basepads will work.

These magazines are tuned to not lock the slide back after the last round is discharged.

Sorry, these magazines are no longer available in 9/38.

Numbered Mags Available:  If requested, we will laser engrave a number in your magazines for an additional charge of $10 per magazine.  Please note that numbered magazines cannot be returned or exchanged.

Click here for more information on slide lock back or not.