Shotgun Mag Caps W/ Push Button Swivel

Purchased a GTSW298 for my Mossberg 590 Mariner, unfortunately the threads machined in the GROVTEC Mag Cap are not compatible with the threads on my Mossberg 590 Mariner's mag tube. Pretty let down as this was the only mag cap I have found with QD capability.

Grovtec please help!

Though it’s not been installed yet, I have good faith that everything will work out exactly the way I had planned. Can’t wait to put it on.

Fit like a glove. Was worried that it was not going to work as far as compatibility but it works great. The friction spring that holds the magazine tube spring in place does get pushed out and into the tube cap so when disassembling the shotgun you need to be careful to not have the spring fly everywhere. The cap feels super heavy and could probably handle anything you throw at it. The only “complaint” I have is the QD is 1 inch vs 1.14 inches. So I had to replace that for the specific sling I am using. But that does not take away from the quality at all of the mount itself.

This, along with the shotgun side mount, fit perfectly on my mossberg shockwave. 10/10 would buy again if i ever buy another shotgun.

This is a fantastic product and extremely well machined (as all Grovtec items).
Unfortunately my example didn’t fit my firearm. Custom service was excellent and tried another, but that didn’t fit either.
I use Grovtec for many other items and will continue to do so, even though this product didn’t work for me.
Great company and great customer service.

Great product mag cap w/ push button swivel perfect fit for 590 shockwave

GTSW-298 Moss 590. This thing is awesome and exactly what I was looking for. QD capability allowing me to go from a 1pt to 2pt sling instantly w/ just a push of a button. Thanks for the great customer service, Jake J.

Was ecstatic when I found this and and couldn't wait to try it. Was hoping this would solve my issue w/ finding a way to have a QD 2 pt Sling. Unfortunately my GTSW-298 for my Moss 590 will not thread on. If they can't help me, I'll be looking elsewhere. Unfortunately it's a Saturday and will have to wait till Monday to hopefully hear back from GrovTec.

Was ecstatic when I found this and and couldn't wait to try it. Was hoping this would solve my issue w/ finding a way to have a QD 2 pt Sling. Unfortunately my GTSW-298 for my Moss 590 will not thread on. If they can't help me, I'll be looking elsewhere. Unfortunately it's a Saturday and will have to wait till Monday to hopefully hear back from GrovTec.

GTSW-298 Moss 590. This thing is awesome and exactly what I was looking for. QD capability allowing me to go from a 1pt to 2pt sling instantly w/ just a push of a button. Thanks for the great customer service, Jake J.