Shield Arms S15 Magazine Extension Black +10/rd
$36.27
Shield Arms S15 Magazine Extension Black +10/rd – 9.5″ L, .223 Rem, Gas-operated, Semi-Automatic
100 in stock
The Shield Arms S15 +10 Magazine Extension adds 10-rounds to your S15 magazine.
Shield Arms' unique easy access floor plate design allows you to quickly access the spring and follower without having to remove the extension from the magazine body. Comes with a 100% lifetime warranty and the Shield Arms Spring for Life guarantee.
Features:
- Compatible with Shield Arms Gen 2&3 S15 magazines
- Index cuts on the extension body to increase grip when coming out of a magazine pouch.
- Machined from billet 6061 aluminum
- Type 2 anodized
- Comes with a 15 coil plus power spring
- Fits Shield Arms S15 magazine only
- Proudly made in the USA
- Lifetime warranty
| Weight | 0.260 lbs |
|---|---|
| Dimensions | 9.250 × 8.000 × 1.500 in |
| Manufacturer | Shield Arms |
| Finish | Type 2 anodized |
| Material | billet 6061 aluminum |
| Compatible With | Shield Arms Gen 2&3 S15 magazines |
PROCESSING & SHIPPING
Orders typically ship within 1–3 business days (Monday–Friday) after payment and all required documentation are received. Time to arrival after shipment depends on the carrier. Shipping method is at BT Gun Company’s discretion; ammunition and oversized accessories are charged at actual shipping cost. We do not ship to Hawaii or Alaska.
FIREARM TRANSFERS
- Firearms must ship to a licensed FFL dealer of your choosing — confirm with them first that they can accept the transfer.
- Your receiving FFL will need to email their license to [email protected] before we can ship.
- Inspect your firearm at your FFL’s location before signing ATF Form 4473 — once signed, the firearm is considered accepted.
You’re responsible for knowing the firearms laws in your state before ordering. For complete shipping, returns, and restocking-fee policy details, see our Shipping & Returns page.

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