Loc-tite and gas block

[lead chucker]

How do you know they have never leaked? And my point is, so what if they do?

If you decide your rifle needs a heavy buffer then surely you don't need every pound of (over) pressure available. I agree, it can't hurt to do this...until you decide to change barrels or blocks using a blowtorch and hammer. And I accept the idea that leaking gas does not sit right with the type of person that frequents these forums; precise personalities with expensive precision rigs.

I can also understand a situation where you need all the gas you can get to be reliable, for example a 300Blackout with carbine-length gas tube. However in other systems why maximize the gas return, only to then mitigate it with heavy buffers and expensive adjustable blocks?

I agree it cant hurt but i have built a number of ARs from 556, 300blkout and grendel and have never used loctite on a gas block. Just made sure they are aligned properly and go.