New build buffer and gas block question

[LRRPF52]

LRRPF52,

By sealing the fron of the gas block do you mean putting a bead around the front where it meets the barrel after it is on the barrel? (Like caulk?)

After I measure and test-fit the block, troubleshoot the gas circuit, I note the location and record that measurement (longitudinal/rear to front distances from barrel shoulder).

I slide the block off, then apply Red Loc tite 271 around the journal up front so the gas block will smear it to the rear. I make a ring leaving a space for the gas port so none gets in it, but put a little behind the gas port so there is a full circumferential application of the adhesive.

I then seat the gas block over the journal to the correct location previously measured so that I have center-to-center alignment of the ports, checking for TDC.

Once that sets up, I put Blue Loc-tite on the gas tube where it goes into the block, behind the tube's port, and install the tube. You can also dab LT on the back of the tube and block once the tube is installed to seal it there. I get no leakage this way.