Shop now and get Free Value Shipping on most orders over $49 to the
contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.
Enjoy our FREE RETURNS
We want to ensure that making a return is as easy and hassle-free as possible! If for any
reason you are not satisfied with your purchase, simply return the item within 30 days of
receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.
Please Enable Your Browser's Cookies Functionality
Cookies are not currently enabled in your browser, and due to this the functionality of our site will be severely restricted.
Web browser based cookies allow us to customize our site for you, save items in your cart,
and provide you with a great experience when shopping OpticsPlanet.
Your privacy is important to us, and any personal information you supply to us is kept strictly confidential.
If you cannot enable cookies in your browser, please contact us — we are always here to help!
JavaScript is blocked by AdBlocker or ScriptBlocker
We're sorry - it looks like some elements of OpticsPlanet are being disabled by your AdBlocker.
Unfortunately we are unable to offer our excellent shopping experience without JavaScript.
Please add "opticsplanet.com" and "https://opl.0ps.us/assets-d08ceb3d86c/" to whitelist,
or disable AdBlocker for this site (please note that we do NOT feature any annoying ads on this website).
Thanks!
Your Browser is Outdated
Unfortunately, we are unable to provide an excellent shopping experience on your browser because it lacks modern functionality needed for us
to provide a fast, secure, and enjoyable experience. If you cannot upgrade your browser or use an alternative device to visit us,
please contact us at +1-800-504-5897 and we'll be happy to assist you over the phone!
XTech Tactical MTX 365 9mm 3 Round Magazine Extension for 12 Round P365 XT3020501 Color: Black, Caliber: 9mm Luger, Gun Make: SIG Sauer, 10% Off
Putting it together is easy. My issue is that out of 5 magazines 3 of them did not lock the slide back on the last round. When I took them apart I noticed one thing. The spring curved towards the rear that caused the round guide to dip down in the ...
Read More...
I purchased this 3 round extension because I didn’t like the feeling of the 17 round magazine. I understand that more bullets gives me a better chance at surviving an incident but if 15 rounds can’t save me 17 wouldn’t either. I have medium sized p...
Read More...
The item is nice because it extends the 12 round magazine to 15 rounds. Even though it’s not the 17 round magazine that you can buy it gives you a full grip. Two things I have had an issue with the extension after shooting twice with them is some s...
Read More...
Sorry to be obnoxious, but not rely on this product a life saving tool.
I purchased 2 of these extenders and both of them failed with less than 2 months of usage.
DO NOT RELY ON THIS PRODUCT FOR ANY EDC PISTOL!!!!
This product in my opinion is a...
Read More...
Product Info for XTech Tactical MTX 365 9mm 3 Round Magazine Extension for 12 Round P365
Convert your Sig Sauer P365 12-round magazines into 15-round capacity with the MTX 365 +3 Extender. Designed for backup or glove box use, this kit repurposes your existing magazine housing and includes a custom-engineered spring for reliability. This extension offers increased capacity and performance for EDC or range use.
Specifications for XTech Tactical MTX 365 9mm 3 Round Magazine Extension for 12 Round P365:
Manufacturer:
XTech Tactical
Color:
Black
Caliber:
9mm Luger
Gun Make:
SIG Sauer
Gun Model:
SIG Sauer P365
Features of XTech Tactical MTX 365 9mm 3 Round Magazine Extension for 12 Round P365
Adds +3 Rounds to P365 12-round magazines (9mm)
Engineered extended spring for consistent feeding
Quick installation with detailed video instructions
Robust performance backed by innovative, patented design
Your Browser is Outdated
