Celebrate the 4th of July by printing one of these magazine extensions!**
Part shown next to a Pierce +2 extension for size comparison. While the fit and finish is more refined, this Thing sure does the job and I can't complain about being able to extend my mags with similar functionality to the Pierce without paying $10+ for a few grams of plastic. It is also a great way to uniquely separate yours from everyone else who dropped their Glock mags in the grass, while adding two rounds.
I used to want to print my firearm accessories in black to make it look more like a factory part, but lately I've been digging the white "I fabbed this plastic myself" look... Results in interesting comments at matches :D
Note: My testament to functionality is on a 9mm glock, as opposed to the 10mm the part was remixed off of. I had to stick a knife in the spring area to push it around a bit to get the +2 capacity, but glad to see some caliber diversity!
** Where freedom applies. Terms and conditions subject to change without notice. I don't recommend printing in celebration while residing in a state whose politicians feel compelled to micromanage your life down to the size of your beverage cup or size of your plastic box -- that could show intent to manufacture a plastic box that is too big for you to safely possess!! What a terrifying assault ammo clip that would be!