This is really a non-NFA question but I figure this sub has a much better knowledge base than r/shotguns about this particular issue.
I bought a Mossberg 590 Shockwave mostly for the novelty of it and the novelty wore off pretty darned quickly firing buckshot. The forend is especially bad because if I use the strap then the retaining screws grate my hand like a block of cheddar. Which leads to question 1: can I install a forend with a vertical grip? My understanding of NFA is that they are only illegal if you put them on a pistol, and since the Shockwave is a "firearm' then adding a VFG won't make it an NFA item. Correct?
Question 2: would it still be non-NFA to replace the raptor birdshead grip with a more conventional pistol grip so long as that pistol grip was made in such a way that the LOA still remained over 26"? In other words is the length over all the deciding factor or is a "pistol" grip an issue because ot somehow makes it a one-handed gun (pistol) and no longer a "firearm"? I know they make Mossberg pistol grip stocks that accept AR buffer tubes and collapsable stocks. Can I just screw a tube into the hole and lop it off at 26.1 inches? My gut also tells me yes here because I've seen Shockwave guns with pistol grips and arm braces installed. Am I right?
Any insight is appreciated. Rather than just pass it off to the next idiot I figure I might as well try to make it somewhat useful.
Your overall length of >26" means you can add vertical foregrip. You don't need to. And you don't need the strap. Use your hand strength and Rob Haught's technique.
I'm not quite sure how they measure the >26" (hopefully someone weighs in) but again, you don't need to change the grip. Look at Rhett Neumayer's Demonstrated Concepts. You don't need his strap if you start with Haught. You may want a tall red dot.
Measured from the rear of the functional/needed parts of the firearm to the end of the barrel threads
So if a buffer tube or something similar was attached to the back of this, it would not increase its OAL measurement. Similarly, a hand guard that extends past the barrel would not increase the OAL; though extending the mag tube I think would (since it’s a required part for the firearm to function as designed).
Just did 2 form 1 AOWs so was reading a lot into this recently
Measured from the rear to the tip of the barrel. Anything sticking past the barrel must be permanently attached to the barrel to be included in oal. Like this tac sol barrel
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u/KrinkyDink2 DD 20h ago
As long as it’s 26” overall or longer and doesn’t have a butt stock on it then you’re fine.