Re: Laserlytle Tri-rail with a heat shield
I've had a tri-rail mounted to my mossberg heat shield for a couple months and I don't have a problem removing the barrel. When it's mounted to the heat shield it still slides loosely over the mag tube.
BTW, my heat shield didn't have the plastic spacer that extends forward to the barrel lug to keep it from moving forward. It just had the 2 hour glass shaped metal spacers and I've never had a problem with it moving forward. My 500a persuader is from '93 and I shoot slugs, 00 buck, and turkey loads out of it (the 20" barrel is threaded for chokes) and the metal mossberg shield has never moved.
I have the 7 round mag tube so it's the same length as the barrel and I don't like the sling swivel all the way at the end. I put a sling attachment on one side of the tri-rail and a light on the bottom which I can switch on and off with my thumb or finger that's on the foregrip.