Practice without compromise

Make every dry fire rep feel closer to live fire

AR-15 Mag Insert

9mm 21-rd mag insert

9mm 21-rd 2011 mag insert

9mm 15-rd mag insert

9mm 10-rd mag insert

Practice without compromise

Make every dry fire rep feel closer to live fire

9mm 10-rd mag insert

9mm 21-rd mag insert

9mm 21-rd 2011 mag insert

9mm 15-rd mag insert

AR-15 Mag Insert

TRUE WEIGHT

The weight your dry fire training has been missing.

INSTALLS IN SECONDS

No tools. No disassembly.

TRAIN WITH YOUR MAGS

Designed for the magazines you already own.

MORE REPS. BETTER RESULTS.

Spend less time resetting and more time training.

TRUE WEIGHT

The weight your dry fire training has been missing.

INSTALLS IN SECONDS

No tools. No disassembly.

TRAIN WITH YOUR MAGS

Designed for the magazines you already own.

MORE REPS. BETTER RESULTS.

Spend less time resetting and more time training.

No tools. No disassembly. No hassle.

Installed In Seconds. Ready To Train.

Installed In Seconds.
Ready To Train.

Simply insert True Weight through the top of your magazine and start training with realistic weight and balance.
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Results that matter

REALISTIC WEIGHT.
REALISTIC REPETITIONS.

Replicate the feel of a loaded magazine, improve firearm balance, and get more from every dry fire session.

Realistic Weight & Balance

Replicate the feel of a

loaded firearm.

More Productive Training 

Spend more time training and less time resetting.

Better Training Transfer 

Practice with equipment that feels closer to what you'll actually shoot.

Frequently asked questions

Have questions? We’re here to help

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What magazines are compatible with TWMI?

Our inserts are designed to fit almost every standard 9mm pistol magazine.

Available models:

  • 9mm 10-Round Mag Insert: Fits most 10-round 9mm magazines
  • 9mm 15-Round Mag Insert: Fits most 15-round 9mm magazines
  • 9mm 21-Round Mag Insert: Fits most 20+ round double-stack magazines
  • 9mm 21-Round 2011 Mag Insert: Fits most 20+ round 2011 magazines
  • AR-15 30-Round Mag Insert: Fits standard 30-round AR-15 magazines

Compatible with most magazines from brands including:

  • Glock
  • SIG Sauer
  • Smith & Wesson M&P
  • CZ
  • FN
  • Canik
  • Ruger
  • Kimber
  • Staccato
  • And many more

Our patented design was built to be as universal as possible. While we haven't found any magazines that don't work, manufacturing tolerances can occasionally result in a tighter-than-normal fit. If you experience an issue, just reach out, and we'll be happy to help.

Are there any magazines TWMI won't fit?

At this time, we aren't aware of any standard 9mm pistol magazines that are incompatible.

 

The one exception is some permanently pinned magazines. Depending on how the magazine was modified, there may not be enough internal space for the insert to fit correctly.

 

Important: Never force the insert into a magazine. Doing so can damage the slider. If your pinned magazine doesn't allow proper installation, the magazine may need to be adjusted by the gunsmith who performed the modification.

Can I use snap caps or laser cartridges?

Absolutely.

 

The inserts were specifically designed to work alongside laser training cartridges.

 

You can also place snap caps on top of the slider during training. Just keep in mind that repeated use may eventually wear the slider's guide rails over time due to friction.

What are the weights of the inserts?

  • 9mm 10-Round Mag Insert: 4.1 oz
  • 9mm 15-Round Mag Insert: 6.1 oz
  • 9mm 21-Round Mag Insert: 8.4 oz
  • 9mm 21-Round 2011 Mag Insert: 8.4 oz
  • AR-15 30-Round Mag Insert: 13.0 oz

How do I install TWMI?

Installation takes just a few seconds.

 

If you know how to load a single round into a magazine, you already know the motion. Simply insert the weighted insert from the top of the magazine, just like loading the first round.

 

No disassembly or tools required.

 

For a quick visual walkthrough, watch our installation video.

Do I need to disassemble my magazines?

No. Simply insert the weighted insert through the top of the magazine. Installation takes only a few seconds and requires no tools.

Will TWMI damage my magazine spring or follower?

No. The insert is designed to sit on top of your existing follower and spring without requiring any permanent modifications to your magazine. It can be removed at any time.

Lifetime Warranty

Solid Brass Insert

 

Every TWMI solid brass insert is backed by our Lifetime Warranty.

 

Precision-machined from solid brass, it's built to withstand years of normal dry-fire training. If your brass insert ever breaks due to a manufacturing defect or normal use, contact us, and we'll inspect the issue and make it right.

 

Replaceable Slider

 

The polymer slider is a replaceable wear component.

 

Like a magazine spring or follower, it will naturally wear over time, especially if magazines are repeatedly dropped onto hard surfaces. Every TWMI includes multiple replacement sliders, and additional replacement packs are available if you ever need them.

 

Please note: The Lifetime Warranty applies to the solid brass insert only. The polymer slider is a replaceable wear item and is not covered under the Lifetime Warranty.

30-Day Money-Back Guarantee

Try TWMI risk-free for 30 days.

 

If you're not completely satisfied, return it within 30 days of delivery for a full refund. No questions asked.

 

Train with confidence knowing your purchase is backed by both our 30-Day Money-Back Guarantee and Lifetime Warranty on the solid brass insert.

Stop Training With Empty Magazines

Upgrade your dry fire setup with realistic loaded-magazine weight in seconds.

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