I want to shorten the barrel on my SR-15 to 14.5" an permanently attach a flash hider, I'm not sure which one yet. Has anyone done this? I have a newish rifle which I believe to have the "larger" gas port. Running a Vltor A5 receiver extension with the standard 5 ounce buffer. I shoot Brown Bear and my only concern is that cutting off 1.5" of barrel may cost me some dwell time/back pressure and may cause me to start having short stroking issues any thoughts?

I don't want to get into a discussion of the merits of commie steel cased ammo, it allows me to shoot the same amount for a third less. That may not matter to you, but it does to me.

Thanks, Andy