Installation is actually somewhat simple however, the 6th round barely gets loaded and then if it does get 7 inside it seems like the spring doesnt help with the reloading at all. Had a few rds get stuck in the tube. Considering returning.

Product works perfect!

Threads are exposed when it's all tightened and it's super finicky getting it to fit the full 7 rounds. Had to mess with it a few times in order for it to work.

Works beautifully, needed a little silicone lubrication and I removed the spring loaded tube cap and just use the screw on and didn't have any problems excellent product.

it only allows 1 extra shell not 2, a bit of a bummer. look is great but it just doesnt allow for the capacity its advertised at

Fast shipping. Arrived in 4 business days. Extension is made of a high quality material. Easy to install. Two small problems. I only gained 1 round with European made shells. American shells, I gained 2. The other is a cosmetic issue. The coupler on the extension does not fully thread to the magazine tube leaving some threads exposed. Purely cosmetic however.

easy to Install but couldnt load 7 shells no matter what I tried

Highly recommend this simple addition!

The extension tube works perfectly except on the Mac 1014 I had to take the spring loaded cap out put The Pusher spring back in and just use the tube cap to hold it in to get all seven in but it's functioning so far so good I have yet to shoot it but racking it has been no problem it affects the shells and loads them up no problem I will give you a further update as I progress.