How to Change a Barrel on An AR-15

VERY IMPORTANT STEP: DO NOT PUT BARREL NUT ON DRY. use regular shop grease at the very least on the aluminum threads.. Aeroshell is the perferred option but regular grease is 1000x better than nothing.

I use sil-glyde from Napa autoparts to grease my threads and lower parts kit. Great for your brake caliper parts too.

Its funny seeing all the comments about over torqued barrel nuts and fighting like craxy to break them loose. I took my handguard off to wipe down the barrel and reassembled it. Never touched the barrel nut. Next time i took it out, 5 rounds of 7.62x39 and the nut was loose. Thought it was the handguard but nope. Took it apart and found it was loose, watched this vid and went to torque to 45 like he suggested and it torqued it past a useable position for the handguard alignment. Grr.

Well said and well done

Excellent video

Thanks for the informative video.

Appreciate the knowledge sharing.

Nikal is the best anti-seize grease I've used for any components that will be subjected to extremely high heat - bbls, muzzle devices, breech plugs, etc.

He doesn't even know how to properly use a torque wrench with a crow's foot. The crow's foot wrench opening needs to be at a 90 degree angle to the handle of the wrench or the torque setting is meaningless.

Good advise. New sub, waiting (not patiently) for my BC-15 to arrive.

Thank you. Personally I want to chznge the muzzle device on my 20" heavy barrel from the one with slanted slots that came to an A2 with straight slots and no slots on bottom when timed right.

I can see changing calibers in a weapon that requires changing barrels needing anti-seize , when you go from a hunting round to a target shooting round because of availability of ammunition.

BCA.. The kings of tolerance runout and tolerance stacking from the beginning of a run to the end of it for x component... Total throw of the dice buying anything from these guys... 🤣🤣🥴🤣🤣

Currently trying to get the barrel nut off of one of your uppers. I have used 3 different tools specifically made to remove these. I had no way to remove this barrel without some sort of extreme measure. I’ve tried icing the barrel and heating the nut with a torch and putting a large breaker bar on it. Even with all my force I couldn’t remove the barrel nut. This is ridiculous. With all the force I exurted it caused the upper to slip and put a pretty good scratch in it. At this point I’m gonna have to put a pair of vise grips on the upper and beat it in till it comes off. I’m sure all future hope of accuracy out of this upper are over with. Thanks BCA!!!! Real quality.

You guys should show your employees this. Tried taking mine off and maxed out my 100ftlb torq trying to get this f* thing off

Thanks for the video! I just purchased a 450 bushmaster complete upper and bought a 18” stainless steel barrel to replace the 16”one. Wish y’all had a 20”450 bushmaster barrel lol. I like the longer heavier barrel for these big bores.

Whoever put the barrel nut on my side charging 12.7x42 must’ve been standing on the wrench!! Ain’t no 45lbs!!

Question can you make a video on changing the dust cover on your billet upper I want to put a custom cover thanks

Good video, thanks for making these ! 👍

Good pointers there. People usually can't get past that work table.