THERE ARE MANY TIPS IN THIS VIDEO! Here’s Part Two of the AR15 upgrade series. My Colt AR6721 AR15A3 Tactical Carbine is getting a refresh. In this video, I start the work by removing the gas block, gas tube, flash suppressor, and barrel nut. Next will be the installation of the new 15″ free float handguard.
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Good videos but you need more editing.
Very informative video.What is the purpose of gas tube or gas block.? Plz reply.
That’s not a flash suppressor, it’s an A2 flash hider birdcage
Wd40 is not a penetrating oil!
You suck
You need to focus the energy to get pins out. Ask any machinist. Use the garage floor as it's concrete. It places you above, leverage and accuracy and the concrete has no give. This guy is using the proper blow hammer and I was impressed with the selection of punches utilized.
Wow dude this series is like as good as it gets. Thank you very much for being so comprehensive and clear. This answered a lot of questions I had.
You need a 2×4 where you notch out a portion for the front sight post… to keep it more level and off of the delta ring… just a thought. (as far as punching goes). It's easier and more cost effective than buying an AR-15 punching block.
can i just cut the top of the sight off with a dremel so i can put a scope on?
Holy moly!!! That’s gonna cost me more at the gunsmith shop than what I paid for the darn thing.
If the pin is rounded just use a nail set. The concave surface will match the convex pin nicely without sliding off the pin.
Good video. I like that you are actually doing it in real time..encountering the little issues one can expect doing stuff like this. Good job!
Hint. Use a roll pin punch and not a regular punch
Working on getting a sight base off now that is very tough cracking the wood up under the barrel.
I have a round block made specifically for the job but cannot find it.
S&W MP 15 sport 2 over and hour now can not get the barrel nut off. Literally feels like its welded on anyone else have this problem? I have actually bent 2 of the teeth on the barrel nut and am afraid I am going to strip the entire barrel nut which seems impossible but I guess not…. It seems a little ridiculous and I have now broke 2 chairs out of anger :D!! Anyone have any tips
Ruger spoiled me with its screw tightening and loosening delta ring.
This tip about using the calipers to figure out which was smaller was extremely helpful. I had spent the previous 45 minutes banging on the wrong side. I never know HOW to determine the right sight. Once I got the taper pins out, the whole process was simple. Thanks.
my pins on the gas stop wont come off, lol
The roll pin that holds the gas tube is IMPOSSIBLE to remove.
pro tip – when you get resistance on roll pin or flash hider, heat the metal for 10 seconds with a lighter or blowtorch for same effect as wd40
First, GOOD JOB – THANKS…Try a 3-inch punch and you'll have less waving around. Yours looks like an 8-inch punch. Also remove the gas tube completely, then you can wrestle the FSB further side to side. Many ways to do a job, all work, some easier than others.
Ur videos on this are by far the best. U pay way more attention to the little details others leave out. I would definitely suggest ur videos on this to anyone..
I have an ar15 a2 model 20" the delta ring and gas block on my a2 look exactly like the one on the video, can I still use them if I install a 16" barrel? I plan to buy a 16" gas tube and handguard
So am I able to just tap out taper pins and remove FSB with gas tube still attached, briefly, simply for purpose of changing out my end cap? Have a middy that came with a circular and am putting in the (mostly) standard triangle so I can actually use handguards meant for middys, (and short of modifying said handguards to work with circle). Also ordered new taper pins along with triangular cap so I hopefully negate any risk of a loose FSB.
God I've been hammering the hell out of these pins. I'll try WD-40
Excellent sir. Really good info. On to Part 3.
Interesting to note that the barrel contour on the AR6721 is much heavier than the M4 govt. profile. It's very similar to an M4A1 socom barrel.
should have used to WD40 on all pins from the start……