If you are not getting your barrel hot, then the high temp locktite will work.https://www.all-spec.com/Catalog/Adhesiv...8442-30769 I switched to Rocksett for my gas blocks. https://www.brownells.com/gunsmith-tools...54624.aspx Even the high temperature locktite will fail if the barrel gets too hot. Make sure the screws and threads are properly cleaned and use the Rocksett very sparingly. Using too much will have the opposite effect and the Rocksett thread lock will fail. I also stake my screws after being properly torqued.https://cdn.shopify.com/s/files/1/0061/3...c.pdf?2026
I found this info on another sight about the hand guard. It sounds like there is a jam nut holding the hand guard on, if this is the correct information.
Square toothed spanner for the lock ring (jam) nut.
30-35 inch pounds on the barrel nut, but if it doesn't quite align, you'll need to apply greater force to advance it to the next through hole for the gas tube.
Install the barrel nut, then the jam nut onto it. Install and align the hand guard, then run the jam nut back against it to retain it in place. I would use a small amount of non-permanent (but heat resistant) locking compound on the bbl nut thread just rearward of the hand guard section where the jam nut will pick it up and spread it thinly into the thread as it tightens against the hand guard..
https://www.ar15.com/forums/industry/RRA...8-247852/?
I found this info on another sight about the hand guard. It sounds like there is a jam nut holding the hand guard on, if this is the correct information.
Square toothed spanner for the lock ring (jam) nut.
30-35 inch pounds on the barrel nut, but if it doesn't quite align, you'll need to apply greater force to advance it to the next through hole for the gas tube.
Install the barrel nut, then the jam nut onto it. Install and align the hand guard, then run the jam nut back against it to retain it in place. I would use a small amount of non-permanent (but heat resistant) locking compound on the bbl nut thread just rearward of the hand guard section where the jam nut will pick it up and spread it thinly into the thread as it tightens against the hand guard..
https://www.ar15.com/forums/industry/RRA...8-247852/?