Glock customizers Zev Technologies showed off their new .22LR conversion kits at the 2015 SHOW Show. They had it behind glass so I wasn’t actually able to fondle it, but from what I saw it looked to be of pretty good build quality, as is the case with many of Zev Tech’s parts. The slide and barrel are CNC-machined and the kit comes with two magazines and a hard case.
It will retail for around $400 and will work with Glock 34, 35, 17, 22 and 17L models and should be available sometime this year. Check out Zevtechnologies.com for more info.