If you ditched the serpa you'd have more room for shells...because the Mossberg will always work.
Tomac how about trying the cdmgear light mount they made for the shockwave. It should push the light out fwd enough to keep it from hitting your support thumb. Since it is essentially a mag tube clamp design it's ambi. You can just flip it over so you can mount the light on either side of the gun. Unless the magpul forend doesn't allow enough room for this mount.
Now that's serious dedication to your Shockwave! Kudos and congratulations.
I hope your Shockwave wasn't part of the wedding......(shotgun wedding).
Oh, it can't be that since the Shockwave is a 'weapon' not a shotgun.
Congratulations on the wedding.
It said it comes with it for free according to the website.Hey Amigo, are you going to get that pointy thing on the mag cap?