Dry Weight Magazine Insert for Glock 17 / SIG P320 / M&P 17rd Magazines
The Dry Weight Magazine Insert is a precision training accessory designed for Glock 17 style, SIG Sauer P320, and Smith & Wesson M&P 9mm 17-round magazines, delivering realistic weight and balance for serious dry fire practice.
This “flush fit” insert is engineered to work with most stock factory floorplates, allowing shooters to train with their actual carry or competition magazines while achieving true match-like handling.
Compatible Magazine Types (17-Round 9mm Full-Size)
This insert is designed for use with:
- Glock 17 OEM 17-round magazines
- Magpul GL9 17-round Glock magazines
- ETS Glock 17-round magazines
- SIG Sauer P320 full-size 17-round magazines
- Smith & Wesson M&P 9mm 17-round magazines
It may also fit other magazines with similar internal dimensions and capacity.
Always verify compatibility before purchase. See product video for additional fitment guidance.
Product Overview: Dry Fire Training Magazine Weight Insert
From JV Training Accessories, the Dry Weight Insert replaces the spring and follower inside your magazine tube, converting it into a fully weighted dry fire training tool.
Instead of relying on dummy rounds or empty magazines, this insert delivers consistent, repeatable mass that closely replicates a fully loaded magazine.
Key Features & Benefits
Realistic Loaded Weight
Each insert is precisely weighted to 230 grams (+/- 5 grams) for a true-to-life feel that matches a fully loaded 17-round magazine. This improves reload training, draw consistency, and overall handling.
No Dummy Rounds Required
Eliminates the need for dummy rounds entirely—reducing clutter, simplifying training, and removing the risk of mixing live and inert ammunition.
Enhanced Safety for Dry Fire Practice
Designed specifically for safe training environments, this system helps ensure no live ammunition or loose rounds are involved during dry fire sessions.
Train With Your Actual Gear
Use your real magazines for 1:1 carry-over from training to live fire, improving consistency between practice and competition performance.
Important Notes
- This listing includes insert only (no magazine, basepad, spring, or follower included)
- Constructed from a durable polymer shell filled with inert weighted material
- Intended for dry fire and training use only
- Designed for adult users (18+)
Installation Instructions
- Ensure firearm and magazines are completely unloaded
- Disassemble magazine by removing basepad, spring, and follower
- Insert Dry Weight unit into magazine body (long side facing breechface)
- Reinstall basepad
- Confirm secure fit before use
To return the magazine to live function, simply remove the insert and reinstall the original spring and follower.
Fitment & Safety Information
Minor fitting adjustments may be required depending on magazine brand, basepad, or internal tolerances.
Always follow proper firearm safety rules and verify all equipment is completely free of ammunition before use. Compatibility with non-listed magazine variants is not guaranteed.
