Just got this dropped!
Ashton Ray (ARay(https://pistol-forum.com/member.php?134-Aray)) had an idea we put to market that allows users with the Magpul SGA installed to shorten things to work around plate carriers and other gear, and if you're not tall like myself, it shortens the LOP enough to make my 1301 almost too short for me at 5'7". The other feature is that it's slick enough in texture to not snag on clothing, but textured enough to work well with a modern shotgun technique.
They're shipping in a few weeks and thus far reviews have been positive!