Recover Tactical 20/20N Airsoft Stabilizer Kit for Elite Force GLOCK Gas Blowback Airsoft Pistols
(Package: Complete Kit w/ Gun)

"Very happy with the quality of the polymer and locking mechanism. Proves to have very very little flex on the stock. Very simple drop in design, my g19 gen 5 fits in with no issue, with one screw. 18c users should know that the position of it's selector switch makes it incompatible without modification. Full face mask users will find it problematic to ADS on iron and possibly RMR sights. They do sell an accessory rail that adds a raised picatinny rail, much needed qol for full face mask players. $120 for a gbb pcc experience? I'd say it was worth it.

"Pros:

This kit is extremely easy to install, only 3 screws are involved.

Besides the hinges and screws, it's made completely out of good quality polymer so it's plenty sturdy and light enough to run around with holstered. I've had no issues with the stock accidentally folding or unfolding, the latches work great. Folding the stock doesn't prevent you from shooting, so you can hold and use it like a regular pistol when you don't need the stability of the stock.

It fits perfectly in the holster mentioned in the description, the G7, which I had already been using as my universal holster for CQB. As I mentioned, it's light enough that as long as you set the tension on the holster properly it won't wobble much or go flying off.

Cons:
The stock doesn't have much drop, so you just barely can't see through your ironsights with a mask on. Recover Tactical has another rear sight clamp/charging handle thing that has a picatinny rail segment on it that I'll be getting shortly. If you already have or plan on getting a red dot mount on your slide, you should probably be getting your sights high enough not to worry.

The kit locks onto your trigger guard and beaver tail, so it only works with Glock 17 length frames with geometry matching the official gen 3-4-5 frames. It specifically does NOT work with the AAP-01, Armorer Works VX7, EMG SAI BLU, EMG ARK-17, Novritsch SSP-18, RWA EXA, and KJW KP-13, all of which I've tested and do not fit properly.

I also noticed when trying to fit the SSP into it that it doesn't have space for a selector switch, so an official Glock 18c won't fit either, though I suspect you could remove some plastic and not use the sight clamp/charging handle thing if you're willing to do some light modification.

Overall, while I'm a little disappointed it's not compatible with other G-type pistols, it's no big deal to just use it with my Elite Force G17 gen 3. The Sights are a bigger issue though, having to buy some kind of red dot mount in addition to the kit for it to be usable knocks it down to 4.5 stars.