Any feedback on GS designs pistol mag extensions?

[WRH]

As seen here: http://www.canadiangunnutz.com/forum/showthread.php/950404-3D-Printed-Magazine-Body-Extensions-(LAR-15-XCR-L-XCR-M-AIA)

Are they durable? Any problems?

I'm not a fan of the magwedge set up and I might try these.

 

[Stevo]

I've been using them for the last year or so for classes, 3 gun and general range use. No problems at all. I really like them.

 

[klatham]

I use them for CQB matches, clinics, courses and training; I have been really happy with them.

 

[WRH]

Thanks guys. I might have to pick a couple up.

 

[Bugout]

I have 4 that I've used at a few CQB matches this summer, no problems, tough as nails.