Frequently asked questions

The 9mm inserts are designed to fit almost every standard 9mm pistol mag, 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. Manufacturing tolerances can occasionally make a fit tighter than normal. If that happens, reach out and we'll help.

• 9mm 10-Round: most 10-round 9mm mags
• 9mm 15-Round: most 15-round 9mm mags
• 9mm 21-Round: most 20+ round double-stack mags
• 9mm 21-Round 2011: most 20+ round 2011 mags
• AR-15 30-Round: standard 30-round AR-15 mags

Inserts are sold individually, so you need one per mag.

We aren't aware of any standard 9mm pistol mags that don't work. The one exception is some permanently pinned mags. Depending on how the mag was modified, there may not be enough room inside for the insert.

Never force the insert into a mag. That can damage the slider. If your pinned mag won't take it, the gunsmith who pinned it may need to adjust it.

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

Each one matches the weight of that mag fully loaded.

It takes a few seconds. If you can load one round into a mag, you already know the motion: slide the insert in from the top, just like loading the first round. No tools and no taking your mag apart.

Every product page has a short install video.

No. With the insert in, the slide won't lock back on an empty mag (on the AR-15, the bolt won't lock back). You can run reps back to back.

Yes, unlike other inserts. They were designed to work with laser training cartridges, and you can stack a few snap caps on top of the slider to practice malfunction drills and unloaded starts.

Heavy snap cap use may slowly wear the slider's guide rails over time.

Yes. Snap caps and dummy rounds aren't allowed in the safe area, but the insert isn't ammunition, so you can run true-weight reloads before your stage. Always follow your match's rules.

No. The insert sits on top of your existing follower and spring with no permanent changes, and the bottom edges are rounded. Pull it out any time and your mag is back to normal.

9mm pre-orders are estimated to ship by Dec 15. If your order includes a pre-order item, everything ships together once it's ready. Orders with only in-stock items ship right away.

Buy 2 inserts and save 10%. Buy 3 or more and save 15%. Mix and match any inserts. The discount applies automatically in your cart.

Yes, on orders of $100 or more.

You're covered by our 30-day money-back guarantee. Contact us and see our refund policy for details.

The solid brass insert has a lifetime warranty against manufacturing defects and breakage during normal use. The polymer slider on top is a wear part and isn't covered. See the full warranty.

Every insert ships with one spare slider, so swap that in first. Then email or DM us and let us know what happened. In most cases we'll send replacement sliders, and we just ask that you cover shipping. You can also grab a spare slider 2-pack.

The inserts are machined from solid brass, and normal dry fire training won't damage them. If yours cracked or broke during normal use, contact us with photos. If it's a product issue, we'll make it right.

Yes. Brass naturally tarnishes and discolors. A quality brass cleaner restores the shine in a few minutes.