Mar 03, 2020 - 09:22 AM
At about 375-400 degrees the epoxy will start to soften and you risk shorting out wiring. In other words, if a wooden handguard would be smoking and you would be shooting holding the magazine and using an oven mitt, you're risking the optic at that point.
Until the rifle gets to the point where the handguard would burn skin off your hands if you touched it, no worries. And the 50k round guarantee has your back just in case.