AO Precision BCG Physical

[@nattybumpo4384]

Slaving the ejector!! That alone was worth the price of admission. Working through those little problems is priceless.

[@pmorin313]

Just ordered one for myself...for the money this checks all the boxes for what you should expect in a quality BCG. Thanks for your insight!

[@JB_Royal_Ambassador]

How about Aero Precision components? Those are the ones I have assembled for the most part.

[@empireants3052]

Just recently found this channel and I wanted to say thanks for all the work you put into it. I learn something new with each video. That little bolt vise is a handy tool!

[@jamesw4445]

Wheeler has an alternative one: Wheeler Engineering Delta Series AR-15 Mag Well Vise Block

[@empireants3052]

Yeah, I actually have the Wheeler one. It's a great tool as well.

[@stevelavalette6898]

Extra respect for showing you mistake.

[@tuksonrider]

Huh, I own 3 AO Precision BCGs. Happy to say, all 3 didn't have the roll pin protrusion issues, and the machining of the was much much nicer. I'm glad you did this as it's something I will now look for. I found them to be great BCGs for around the $60-$70 range. My earliest one has around 1500 rounds on it. I'll continue to buy AO BCGs, but your video was a real eye-opener! Thank you!!!

[@muddyhotdog4103]

Where do you buy yours out of curiosuty

[@tuksonrider]

@@muddyhotdog4103 RightToBear dot com. They regularly go on sale between $60-$70

[@muddyhotdog4103]

@@tuksonrider ya I've been looking at them.. they're up to 79.99 right now.. I've seen them normally at 69.99 tho. They seem gtg tho. I have a couple toolcraft bcgs but I'm not liking how they over polish the edges.. seems all melted and possibly brought out of spec from it

[@supermoon1430]

Ryan Casey yeah for real is it because of what’s going on right now that the had to up the prices?

[@andrelopez7589]

$150 now on RTB

[@jasonwheat5242]

The biggest lesson i learn from you is no matter the brand you can have problems. Check your firearms don't assume because it's from brand x that it is good to go!

[@realisrealite5554]

People say milspec doesn't mean anything,but watching your video's and seeing you have to modify parts like extractors is exactly why milspec means something.

[@chrissnoeberger192]

"Mil-Spec does not equal quality" - unknown Can't remember who said it. Probably some famous KZbin-er but it couldn't be more true. Mil-Spec usually goes to the lowest bidder that could fulfill the criteria.

[@brianquinn2546]

@@chrissnoeberger192 lowest bidder that can meet those specific specifications that the military lists. They know what they want so whoever can produce that at the lowest price will win. Imagine buying spring water. You lust the minerals it must have and what level. Them whoever can do it cheapest wins. You still get spring water 💧

[@m.p.2482]

@@tm1180 how was it a waste of time? He used the skill and tools he has to inspect a product he purchased. He found a potential problem and fixed it. He also passed along knowledge that someone else may find helpful. If you watch more of his vids, you'll see that the BCGs from the companies you mentioned may also be out of tolerance or have problems. Besides Colt, the other BCGs you mentioned may actually be made by AO Precision anyway since AO manufactures them for quite a few other companies.

[@christ6177]

Great video. I never thought about replacing springs in a factory bcg always assumed they were g2g.

[@allencooper8744]

Nice to know im not the only one that has done that to an ejector roll pin when i was in a hurry.

[@alouiciousjackson5812]

LOL you jacked up your punch, vise, and bolt. That's the problem with talking while you work. I'm glad I'm not the only one to have ever done something like that!

[@TheMsdos25]

AO precision also sells under the Brand Name of e2 armory. They even have a slick polished titanium nitride bcg

[@realisrealite5554]

I suspect the Geissele m4a1 bcg is a Aero bcg.My Geissele m4a1 bcg has the same undersized extractor spring purch and the mpi hpt are exactly the same.I also had to modify the extractor spring purch for a Colt spring.These problems are why I always buy Colt when I can find them.

[@Mr_Clean]

AO precision isn't Aero Precision. It is possible the geissele could be using AO, they do make em for a lot of OEMs

[@jackbauer4186]

Supposedly colt bcgs are outsourced now, possibly to AO Precision.

[@KiperBloom]

Would it be possible to get a list for possible roll pins to get in bulk from McMaster (like gas block, bolt roll pin and what material is best). I always buy then singled from PA, I didnt know McMaster sells them in bulk.

[@troybailey4225]

I've bought them in 100 packs from McMaster. I paid about $6 for 100 gas tube roll pins.

[@alouiciousjackson5812]

From what I've seen, AO lives up to their 'Mil-Spec' claim. Excellent dimensions but they don't spend much time on a fine finish. This video just confirms it. I usually stick with Toolcraft. A great option is the 'RTB' polished nitride BCG(Toolcraft carrier with AO bolt). High quality hardware with the smoothest carrier finish I've ever seen, and reasonably priced. It would be nice to see a similar video for one of theirs.

[@tariboclaxton2123]

I have the same RTB carrier, is it confirmed that they are made by toolcraft? haven’t been able to find info anywhere

[@alouiciousjackson5812]

I don't remember where I got the info now(I may have emailed them) but it was definitely a Toolcraft carrier with AO bolt, although nicer than either because RTB gives it an additional polish/quench sequence.@@tariboclaxton2123

[@tariboclaxton2123]

thanks, it does appear to be quality, not just the finish but the staking and gas ring run feels like its sized appropriately @@alouiciousjackson5812

[@tariboclaxton2123]

@@alouiciousjackson5812 im kinda curious whether the extra polish would cause it to gauge worse since it may be taking down material and decreasing gas seal. Also curious why polishing nitride isn’t more popular

[@JimyoVibration]

All of us here are recovering Bubbas. All good brother

[@CharlesVanNoland]

It's clear that you're motivated to figure out if this BCG is legit for your own build, this was the fastest of all the BCG physicals I've ever seen on here, you were moving extra quick like you just wanted to get it over with, which I can totally understand. It just seems like it's not going to be as valuable to viewers as the physicals/autopsies of 3rd party BCGs where you take your time and explain more about the what/why of examining the components. It was fun trying to keep up though!.

[@supermoon1430]

He has in multiple videos slowed down and explained he shouldn’t have to every time there are always the other videos to watch till you get what he’s doing

[@solaj22]

Awesome videos here! Keep em coming.

[@David-p7z9n]

Great vids! One detail: those look like “spring pins”, not roll pins. Spring pins are split, roll pins are rolled & overlapping A&P/IA,ASE

[@AlmostFamousShow]

My nitride bcg from ao precision came and it has machining marks all over the bcg. I’m surprised tbh

[@rilianriggs4620]

I love your channel. I'm actually learning something about things I'm interested in. Jealous of your tool collection LOL!

[@Error-5478]

Doesn't AO have military contracts for bolts?

[@FrankBroughtonNY]

Excellent video - thank you!

[@richardbriscoe8563]

I shuddered when you were opening the extractor spring hole with your Dremel tool while holding the extractor in your hand.

[@spadetrump]

would it be possible to magnetize a firing pin so heavily that it could not be demagnetized? Or make a firing pin out of a magnet? And then put it in a bolt carrier and send it to Chad to have him do a review on it?

[@gagunshooting803]

Did you forget to put the O-ring back on the extractor?

[@gagunshooting803]

Ed Cole Oh okay I was wondering about that...thanks

[@madmaxd1]

Your videos are amazing and very informative. Glad I subscribed. Question: I thought that the internal finish of the bolt carrier needed to be not so smooth. I was under the pretense that this would help, on wearing the gas rings' contact face for a better seal.

[@SynFuLLLz]

Really wanna see a toolcraft physical -- someone send him one!

[@DanteAZ72]

As a layman, why does the cam pin need to be installed the same direct every time?

[@kanaka118446]

There's a hole in the middle of it where the firing pin fits in. The direction of that hole is perpendicular to the longways portion of the cam pin head. Put the cam pin in longways, turn it 90° so the firing pin can fit

[@kanaka118446]

It's been one month since I made that last comment and I'm only now realizing I only explained how the cam pin functions in the rifle, did not explain why it should be installed the same direction every time. I apologize for that mistake, I must have been absent minded that night. The reason it should be installed the same way every single time is to decrease wear on the cam pin. When only one side wears it keeps the same wear pattern on the cam pin and on the upper receiver. Then it is installed both ways randomly, you could wind up with a sloppy lock up on your cam pin with enough cycling of the action I hope this explains it well enough. Sorry again that I didn't do a good job with my first comment.

[@cbremer83]

Is it possible to polish the carrier bore? Kinda like polishing heads on an engine?

[@josharchbold9034]

Does anyone know the specific part number for the ejector pin from McMaster in this video? Looking to replace mine after i check headspace.

[@msuggs2230]

New to this ar15 build, but what’s best BCG to buy Mr School of American Rifle? Appreciate it

[@darwinner007]

Have you done any physicals on JP bolt carriers? They mention roller burnishing their bolt bores rather than chrome lining them.

[@andrewe2250]

Im sure if someone sends him one he will do it for us.

[@thomasrussell2789]

Thank you

[@gunsandcommissions]

Hey Chad - what weight ejector spring do you prefer?

[@jamesw4445]

Is AO Precision same as Aero Precision?

[@Mr_Clean]

No.

[@jamesw4445]

@@Mr_Clean Thank you. I ordered an Aero Precision BCG and was concerned after watching this video. I am glad they are not the same.

[@jamesw4445]

@@rj8296 I got the nickel boron w/o logo BCG.

[@kanaka118446]

No they're different. But you should know that Aero Precision BCGs are made by Toolcraft, as are PSA Premium BCGs. PSA's Father's of Freedom BCGs are made by Microbest

[@jamesw4445]

@@kanaka118446 Thanks. That's good to know.

[@lewiscole5193]

Okay, I'll bite ... whenever you check headspacing, you seem to do so with the ejector pin and extractor still in place on the bolt whereas in virtually every other video I've seen from others, said components are always removed presumably to prevent them from causing false headspace fails. What are you doing that the other video makers aren't that makes leaving the ejector at the very least, A Good Idea? Also, if I understood you correctly, whenever you remove the ejector, you replace the ejector pin with a new pin. Am I understanding this correctly?

[@SchooloftheAmericanRifle]

My gauges are modified so bolt disassembly isn't needed. No one else has these gauges unless they make them like I do.

[@lewiscole5193]

@@SchooloftheAmericanRifle Thanks.

[@gabrielledesma3200]

Do one on the aero nickel boron that be great

[@jamesw4445]

Well, send him one and I am sure he will do it;-)

[@gabrielledesma3200]

@@jamesw4445 send him one bro mines in my one and only shit hit the fan build

[@Tunechi_Lee]

All you did was center punch for the hole you want to drill, and make sure that long pin never got used again.

[@joshY6371-t5k]

Do one on bravo company bcg

[@jamesw4445]

He did, multiple ones.

[@flashgross]

Great video but good lord, you are a gun DORK! Love it though!

[@jefforymerten9613]

Great video - you added a subscriber. Will you PLEASE do a tool list - including brands? I read below that you make your own headspace gauges. Got it. I heard in the video that the bolt vise is a Sinclair. Anything else you can list would be great.

[@iwillnotcomply007]

What is the issue if a part is magnetic?

[@schuttrostig5729]

might pick up metal parts and then jam... if shot steel casing or other magnetic particles come close... like when you dremel your parts :)

[@User-1543]

Pulling off tiny pieces of metal and getting in places they shouldn’t.

[@abolishtheatfandrepealthen6014]

Rewatching cause im forgetful

[@Oper8or]

I'm very surprised that you dont measure the bolt along with the carrier. I think it is something i might measure to see how far back it interfaces with the 3 bore. Its just something i thought of while watching your videos. NO i am not telling you how to do your work!!!! I'm only saying its something i will check from now on.

[@scottnj2503]

Benefit of your goofs, we all get to learn from them. A subtle thing, but possibly best part of your posts.

[@dx11101]

im noticing from this channel that mistakes slip through even on the mid and high end mfgs....I wonder if Aero QAs every BCG or just every 10 pieces.

[@gunsandcommissions]

That ejector roll pin is outright sloppy

[@darwinner007]

Also, do you have any input/experience with the JP one-piece gas rings?

[@andrewe2250]

Ive asked him about it before, he suggest he didn't care for them because you cant really test them. I tried one in a BCG i knew had a tight fit with the 3 rings and it went from a nice tight fit to failing the standing and gravity test. I went back to the 3 rings.

[@cb7677]

All JP rings will fail, they're purposely undersized and the contact surface is polished, no issues with mine in 308 rigs. There's a video of Pat Rogers on YT explaining that the most carbines/mids will work with no gas rings installed.

[@Quality_Guru]

Looks like it had one small issue and not as nice as the Geissele components. Compared to the Geissele REBCG BCG it doesn’t look as promising, then again it’s half the cost. It’s worth noting that the tolerances were tight, but it was not well put together. I have to admit that the Aero Precision quality reputation has been diminished some what.

[@itsfree2639]

This is not aero precision, it’s A O precision. Two different companies. Also, A O makes geissele bcg. Not the enhanced version but their m4 version

[@markcmann]

Excellent detailed breakdown of the Aero BCG. Thank you.

[@huntermitchell761]

this is AO Precision not Aero.

[@markcmann]

@@huntermitchell761 Oops

[@realisrealite5554]

Thats why I buy Colt they do the small things and they're a known quantity.Theres other companies that probably do too but I know Colt does.