GS Fast Magwell for Gen5 Glocks

Finally a low-profile magwell that accepts back straps! I really like mine so far. Much tighter fit than the SLR Rifleworks magwell I tried a while back. Locks in place with absolutely no play. It does prefer the shorter base pad length of older gens, just as a fair warning. Gen 5 base pads do fit though, just with a bit of tension. I use 10-8 base pads on numerous mags, and those fit perfectly. Considering getting a second one for another Glock as I type this.

My concealed carry here in Alaksa is a G45 with a GS Speedrail Slide and Mec-Gar 18 Rd magazine. Lightest handgun I've ever owned, which I love and wouldn't trade for anything. My hand is XXL so I need the large backstrap. This magwell is the finishing touch to make a great gun the perfect fit for my hand. The front flare is just subtle enough to give my pinky a reference while not adding extra bulk or contours when concealed. I've used G19s and G45s on the range with magwells and no backstraps. I love magwells for speed and ease of exchange but not having the backstrap still slowed my firing time because I had to consciously think about my grip. Can't wait to get this out on the range. Thanks Lenny! The GLOCKSTORE does it again!

Build quality is great. Looks great on my G45. But beware, magwell does not work with Shield Arms Extended mags. Used a dremel on mine and I got them to work just fine.

Bought this for my Gen 5 G45. Make sure you use the G5 17 plug, NOT the G5 19 plug.
I had a little trouble at first until I realized the G45 uses a G17-size grip with a G19 slide..lol 🤦‍♂️ Once I swapped to the correct plug, everything fit perfectly. Solid product—just pay attention to the model compatibility.

Received this flared magwell for my G45 MOS Gen 5. Install was easy and completely secured the magwell to my Glocks stock flared magwell. I truly like this magwell’s design for securing to my Glock. But, I found that this magwell will not support Shield Arms extended 17 + 5 magazines. The pin/metal riser that extends up from the lower extension cap/spring lid won’t allow the magazine to fully lock in place due to the lip of the GS Fast Magwell. Luckily, I was able to make a modification to the GS fast magwell so now it supports my SA extended magazines. An opening to allow the pin/riser to push farther up into the grip module. Dear Glockstore customer service, I recommend that you ask your developers of this magwell to make this design change to support SA extended mags in the future!