Magazine Tuning Kit, for STI Magazines, by Dawson Precision®

15 Reviews
Magazine Tuning Kit
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Now You Can Tune Mags Yourself; PERFECTLY!

Dave Dawson has designed a tooling package to tune STI Magazines. Dave has long been recognized as The Expert on STI mags. Now you can tune and maintain your own magazines the same way Dave does. Kit includes Feed Lip Forming Tool, Feed Lip Spreading Pliers, Diamond Feed Lip De-Burring File, and Spring Compression Tool along with an instructional DVD that demonstrates the proper process to tuning magazines. Dave's own Top-Secret measurements to super-tune your high-capacity 9mm, .38, .40, and .45 magazines will be revealed for the first time on the DVD. Bench vise, brass hammer and dial calipers are required but not included.

Product Details:

  • Super-tune your own STI 2011® magazines just like Dave does!
  • One Kit for All Calibers (9mm, .38, .40, and .45)
  • Detailed Instructional DVD Included (NTSC)

**NOT compatible with SV magazine tubes!
**Will NOT work for the MBX style magazines!



Write A Review
  1. Mag tuning kit

    Posted by Ben Lutes on Jan 28th 2019

    Fantastic, Dave Dawson has to be the all time master of all things STI. I was ready to deep six half of my mags but in one afternoon with this kit I managed to save all of my expensive mags. HooRah David, thank you.

  2. Need to Update for the Gen 2 Magazines

    Posted by Wil on Sep 3rd 2018

    Excellent step by step instructions, and the dimensions provided in the DVD have worked with both the STI Gen 1 and Gen 2 magazines. The feed lip arbor didn’t fit the Gen 2 tubes, and the springs have been redesigned making use of the aluminum bar different than shown, but still a great tutorial on magazine tuning.

  3. Great package

    Posted by Alan on May 14th 2018

    Watched the video twice, bought a brass hammer and sandpaper and tuned up 4 of my 10 mags. Big difference in the way the rounds feed. Definitely an improvement!

  4. Great Product

    Posted by Don on Mar 15th 2018

    Great tools and instructions to tune your STI 2011 mags. Even I could do it .

  5. Learn to tune your mags

    Posted by Shayne on Feb 15th 2018

    The dvd that came with the tools to do mag tuning was very helpful. I thought that tuning a magazine was going to be much harder than it was but that was not the case. Good work Dawson

  6. Must have

    Posted by Peter on Sep 7th 2017

    The spreader is a must have. Wish they had the DVD on a thumb drive and a format I could use, but there are plenty of vids on youtube to figure out how to do things. I had the lips on my mags tuned in minutes, including polishing the lips. Good stuff.

    One more thing... A bit daunting to take a hammer to your mags but it works.

  7. Better than expected

    Posted by Mike on Jun 12th 2017

    I have a set of 9mm that have 5 seasons on them. All were starting to have issues. About a half hour and they are all up and running again.

  8. Great tool to have

    Posted by Ed on Apr 18th 2017

    After watching the video, not hard to do. Make sure u have a very solid vice.

  9. Near to perfection

    Posted by Bill on Jan 2nd 2017

    The thickness of the tube at the feed lip area was also an issue for me on one mag. 2 others brand new were a mess and now work as they should of. In the future I will only purchase MBX mags. Out of six mags purchased new 3 didn't lock back, one of the Mags also had a bad spring after all the measurements were completed. With out this I would of sold my sti. Special thanks to Dave for this product.