✓ 15-Round 9mm✓ 50% More vs OEM✓ Glock 43X & 48✓ Steel Body✓ Gen3 — Made in USA
✓ In Stock · Ships Same Day before 2PM EST
📦 US warehouse · 🚚 Free shipping over $99 · ↩ 30-day returns · 📞 (954) 487-9799
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Steel Mag Release Recommended: For best long-term reliability, pair the S15 with the Shield Arms steel mag release. Questions about install?
Call (954) 487-9799.
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⚡ SHIPS SAME DAYOrder by 2PM EST
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🚚 FREE SHIPPING $99+U.S. Lower 48
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About the Shield Arms S15 Gen3
The Shield Arms S15 Gen3 is the premium 15-round magazine for Glock 43X and Glock 48 — increasing capacity from the OEM 10 rounds to a full 15 without changing the flush footprint. Same external dimensions as your factory mag, 50% more rounds on tap.
Built with a precision steel body (not polymer), the Gen3 is the most refined revision yet — updated feed lips, optimized follower, and a new spring tune. It's the standard upgrade for serious Glock 43X / 48 carriers who want real capacity without printing a grip extension under a shirt.
Why Glock 43X/48 Owners Love the S15
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50% more capacity — 15 rounds in the same flush footprint as the OEM 10
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Steel construction — stronger than polymer, more consistent feeding under stress
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Gen3 refinements — feed lips, follower and spring all updated from Gen2
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Same exterior dimensions — fits OEM mag pouches and IWB holsters with mag carrier
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Made in USA — Minnesota-machined, Shield Arms quality control
What's Included
✓ In the Box
- 1x Shield Arms S15 Gen3 magazine
- 15-round 9mm capacity
- Steel body, polymer base plate
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✗ NOT Included
- S15 steel mag release (sold separately, recommended)
- Ammunition
- Pistol
- Mag pouch
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⏱ Setup time: Zero — load and run. For best longevity, install Shield Arms steel mag release (~10 min).
Specifications
| Brand |
Shield Arms |
| Model |
S15 Gen3 |
| Caliber |
9mm Luger (9x19mm) |
| Capacity |
15 rounds |
| Construction |
Precision steel body |
| Compatible Pistols |
Glock 43X, Glock 48 (MOS and non-MOS) |
| NOT Compatible |
Glock 43 sub-compact — different mag spec |
| Revision |
Gen3 — current production |
| Footprint |
Flush — matches OEM 10-rd dimensions |
| Country of Origin |
USA (Minnesota) |
⚖️ State Legality: 15-round magazines are restricted in CA, NY, NJ, MA, HI, MD, CO, VT, WA, IL, and some city/county jurisdictions. Buyer confirms legality of capacity before ordering.
Complete Your Glock 43X/48 Carry Setup
Frequently Asked Questions
Will this work with my OEM Glock magazine release?
It works, but the OEM polymer release will wear over time against the steel mag body. Shield Arms recommends their S15 steel mag release for long-term durability.
What's different between Gen2 and Gen3?
Gen3 has refined feed lips, an improved follower geometry and a new spring tune. Most owners report Gen3 has the most reliable feeding of the S15 line.
Will this fit a Glock 43?
No — only Glock 43X and Glock 48. The original G43 sub-compact uses a different (smaller) magazine spec.
Is the flush footprint really 15 rounds?
Yes — the S15 holds 15 rounds at the same flush profile as the OEM 10-round magazine. No grip extension, no printing.
Any break-in needed?
Most users run them straight out of the box. If you want belt-and-suspenders, load to 15 rounds and let them sit overnight to set the spring, then range-test before carry.
Why buy from TakTactical?
Florida family-run, BBB-certified, real shooters on staff. Ships same day before 2PM EST, free shipping $99+, 30-day returns, phone support at (954) 487-9799.
📞 (954) 487-9799 · 📧 info@taktactical.com · 🇺🇸 Florida Family-Run · BBB-Certified · Real shooters · Real support
