When we released our MTX 365 for the 10rd Sig Sauer magazines, thousands of customers felt their 12rd factory magazines were now obsolete. They loved the much improved over factory ergonomics compared to the 12rd magazines. But his left them with costly magazines. So we answered the call of bringing value our of these magazines.
Our MTX 365 +3 12rd kits convert the factory 12rd magazines to 15rd magazines, ideal for back up and glove box magazines. We engineered all components in house and all you will use is the original magazine housing. Lifetime warranty and like all our products, reliability you know you can count on!
We offer as a one pack and three pack. We did a three pack due to the popularity of the Sig Sauer P365 Tac Pack which shipped with three 12 round magazines.
The SIG P365 Mag Extension is compatible with factory 12-round magazines for the standard P365 frame. Please note this only works with Sig P365 12 round magazines and standard frames.
One of the main features of the SIG P365 Mag Extension is the custom-engineered spring, which guarantees unmatched reliability and ensures last-round bolt hold open. The MTX 365 12+3 Round Magazine Extender also comes with a detailed installation video QR code to guide you through the simple process of adding this essential P365 upgrade to your firearm.
With its innovative, patented design, US 11,408,697 B2 and US 11,168,954 B1, and unparalleled reliability, this superior accessory is a must-have for any Sig Sauer P365 owner looking to enhance their firearm’s performance and take their shooting skills to new heights.
WILL NOT SHIP TO CA, CT, DC, HI, MA, MD, NJ, NY, OR, RI, WA
Joshua Cox (verified owner) –
Great customer service! quick shipping and the extension gives a much better grip area! highly recommend!
flyte5 (verified owner) –
After trying sig sauer’s OEM mag extension and 12 round mags, I was very disappointed in the wiggle the extension piece had. Then I found XTECH and ordered their 10 round to 12 round kit converting my original sig mags to 12 rounders. Wow! No more wiggle and even looks much better! Feels great in the hand. I liked it so much, that instead of returning the new sig 12 round mags with wiggly extensions, I swapped out the sig extensions for xtech 12-15 round mag kits. Now I have 4 mags and they all feel high quality! These mags are even easier to load with the new included springs/followers. (Let the mag sit FULL for a couple days to break them in!)
Thank you xtech!
Gerry Pearson (verified owner) –
I was a little skeptical at first with aftermarket parts that go on something that can be the difference between life and death but after putting it through hell with all kinds of ammo it came out with zero jams and cycled amazing. Id 100% trust this product when life hangs in the balance. I liked it so much i order the complete mag with the extension already installed. A+ X-Tech!