I see Griffin used to produce a linear comp compatible with gate-lok suppressors, but sadly it is no more.  I'm curious what caused it to be discontinued; seems odd that such a device would not sell well.  Seems like it'd be the perfect solution for Gate-Lok owners with short barrels that may not always be run suppressed.

As a new M4SDK owner, I'd sure like to have one.

It was a vendor part we never made it in house.  I guess we just didn't get to it. Internal material removal is tough, so if this came back, it would probably have to be a laser welded two piece muzzle device like our taper mount linear comp.

Thanks for taking the time to explain, Austin.  I will keep my fingers crossed you run out of more pressing projects and maybe circle back around to this one.  

Like I say, seems like a perfect solution for SBR folks that don't want to run suppressed 100% of the time for whatever reason, but still want to mitigate some of the excessive SBR blast where possible vs a brake/standard comp.

I don't think it's a bad idea- we're just working a lot of stuff on the firearms side and it's keeping us occupied at the moment.  Maybe we can get to it, but I'd also like to do something that protects the baffles a bit better when its in the can.

That's my dilemma from the customer side too. I don't want to run a brake or a flash hider on a shorty that ends inside the rail when it may get taken out without a matching suppressor, but for a barrel short enough to end inside a rail, a brake is almost a requirement if I care about the blast baffle. (Griffin SR or similar can inside rail setup)

Question - how much different is the impact on the blast baffle with a flash hider compared to a linear comp?

Too bad the gate lock  and dual lock  blast shields  can't be run under a rail. :-/
On the positive side, I do have some taper mount brakes and a taper blast shield ....

I don’t have specific experience with the linear comp, I just don’t think it is a baffle happy design.

For under rail applications, the recommended route is to use a taper mount direct thread adapter.  They have like a mk2 bren inspired tapered cone geometry and will reduce risk of muzzle blast injuries to hands over the rail when conservatively installed within an inch or so of end of the rail.

The impact to the interior of the blast shield is nil, no matter what muzzle device you use. You’d have to do some heinous shit to harm it in a way that would noticeably affect its function.

FA + 10.5" = abuse & erosion
I've already stretched an AAC closed tine flash hider enough that it locked itself into the mount.  
The first baffle isn't gone, but it has obviously been rode hard and put away wet.

I’ve used a Gate-Lok blast can a good bit on an 11.5” in semi and full, and while I can see evidence of that nonsense with a flashlight, there has been no effect on dimensions that matter, or performance.