I am answering my own question...and the answer is NO, this rail will not work with a Mossberg 590a1. I have the 590a1 with the 18in heavy-walled 18in. barrel and the front of the Warhammer rail will NOT fit over the clamps...barrel is just too big. Just received the Warhammer from Optics Planet - great place to buy from !! - and tested it out and it would not work
The Aimtech Warhammer Tactical Full Rail Shoutgun Mount w/Magpul M-LOK System will most likely not work with that forend.
The Aimtech Warhammer Tactical Full Rail Shoutgun Mount w/Magpul M-LOK System will be compatible with a barrel that has a front sight equipped. However, if you have a rear sight, it must be removed before installing.
The Aimtech Warhammer Tactical Full Rail Shoutgun Mount is not compatible with the Beretta 1301 Tactical.
The Ergo Grip M-LOK Shockwave Mossberg 500/590 Tri Rails at the link below will work for the 590 Shockwave.
https://www.opticsplanet.com/ergo-grips-m-lok-shockwave-mossberg-500-590-tri-rail.html
Yes. The Aimtech Warhammer Tactical Full Rail Shoutgun Mount w/Magpul M-LOK System will fit on your Maverick 88 as intended. You can use any mount compatible with the Maverick 88.
Yes. The Aimtech Warhammer Tactical Full Rail Shoutgun Mount w/Magpul M-LOK System should fit and function as intended on the 590S. You would use any of the Mossberg 590 compatible mounts.
Yes all of our Warhammer rails can be installed on guns with a vent rib.
No our fill length rails M-Lok rails are not compatible with the MagPul M-Lok forearm because the M-Lok slots are located in the same position.
Yes all of our Warhammer rail are compatible with 18” barrel lengths.