Tldr: design and quality issues. lefties are out of luck. - Recover Tactical Glock Stabilizer Kits - Conversion Carbine

Ironically this Stabilizer with Brace will not for left handed use so if you DO require an assistive brace you had better hope that your injury/disability is YOUR LEFT HAND cuz you know, it would be terribly inconvenient for you to want to use an assistive brace on your Right Hand (I have right hand nerve damage so braces and stabilizer kits are very important to me. I'm running a Gen 5 Glock 19 and a Gen 4 Glock 17.)

FYI: I am a loyal Recover Tactical product supporter. I own multiple Recover Tactical charging handles and rails and have been very happy to recommend them. I purchased four of the Stabilizer Kits with G7 Holster and MG9 Angled Pouch. Perhaps I hold Recover Tactical to a higher standard but the Recover Tactical Stabilizer Kit is a disappointment and will not work for someone who has lost sensory and motor skills with their right hand.

The Good:
Shouldering the brace lines up with iron sights.
The kit is low profile and shooting with it shouldered and as a assistive brace works.
It does help felt recoil and increased my range with my Glocks.
The holster pic rail attachment is solid.
I really like the brace design (except for issues below).

The Not-So-Good
The G7 Holster: flimsy build. The draw mechanic is iffy if used under pressure. I would not trust this holster for any kind of use other than display. Definitely not any kind of duty.
The stock only folds one way so the G7 Holster cannot be setup to holster or draw left. This should have been noted as well as ...
USING THE HOLSTER MEANS YOU CANNOT USE/MOUNT ANYTHING TO THE LEFT/CLOSE SIDE OF THE STABILIZER. When holstered to the G7 the Stabilizer is so close there is no room for anything to be attached to the left pic rail. There's barely enough room for the rail. I tried wedging my smallest light (Inforce WMLx) but doing THAT trips the holster release mechanic :( so if you expect to use BOTH side rails don't expect to be able to use the G7 holster.

The Stabilizer Kit will not work with Gen 5 backstraps.

The Stabilizer Kit (specifically the low charging handle) will not work with A Trijicon SRO (probably why they're selling an Upper Rail attachment)

The MG9 Pouch is so tight a Glock magazine cannot be removed unless both hands are used. Will it loosen up? I don't know, but as shipped any expectation that a fast mag change using the MG9 is impossible. I know, I tried three of them.

THIS LAST IS NITPICKING BUT ...
...the above issues had me looking even closer to the Kit and I noticed an improper fit with the taller "Upper Charging Handle" to the lower part. Since I bought a couple of the kits I compared them and, sure enough, ANY combo of Upper Charging Handle and lower had noticeable gap/fit issues. This is NOT the case when using just the Lower Charging Handle. Like I said, I've been a loyal Recover Tactical user. I really like the charging handles: I have one on my TC Shield, my G19 and will probably get one for my P365XL. I have the rail for my Shield and P365XL so I guess I'm expecting higher quality control from Recover Tactical and with OCD tendencies I can't unsee the Upper Charging Handle gaps. Unfortunately using the lower charging handle makes it difficult to rack.

I really wanted to like this product. Unfortunately there are too many issues to recommend it especially as a lefty. May be resolved in V2 or in the 20/21. But for now, because of the Limited Warranty I'm stuck with four stabilizer kits that I intended as gifts that I am no longer confident to give.

I have shared these concerns with Recover Tactical and will update this review if I receive a response.