How does one go about having SOTAR Chad examine a bcg? I can't find it on the website or fb. What's that cost, anyway?

He did, recently. Check his page

​@@enb3810where?

Thank you. In my opinion she is the star of the show. My videos were terrible till she stepped in.

Call brownells and start collecting. Can’t hurt, right?

@@HB-kp6rl I wished he had an entire list of the tools he uses on his bench that we could either buy a full set from him or each one linked to where it can be purchased.

The don't stake cause it's easy to do improperly. So instead they have a key built into the gas key that fits a special recess in the carrier. That lines the parts up correctly and carries the loads of the gas key and gas tube slamming together. Then the actual screws are loctited in place

The problem is the best that day might be the worst the next batch these are just that particular one. Watch the vids when he does like 5 of the same manufacturer and they all gauge different. Just get a colt bcg and know ur good. They don’t look fancy with DLC or TN coatings but they are not gonna fail on ya and always gauge good! He gauged 3 from almost 30 yr apart and still gauged good.

He always says it's a sample size of one and just because one sample is bad or good doesn't mean every copy will be that way

Blindly buyin stuff just because “Colt” can get you into just as much trouble. Tons of Colt stuff out there that’s out of spec and junk. Hell, they hardly make ANYTHING in house anymore.

I'm surprised anyone caught that. Good job.

I know. *I've got to get me a set of the gauges he uses!!* I've encountered the same issues as you did after putting together 6 ARs. The AR is the "Rolex" of rifles, with many parts that have to work well with the others in order to extract as much precision as possible. The AK is a Timex!

@@iamnotpaulavery where did you buy your guages from?

@@dmdm9198 No, *I wish* I had the gauges he has. I don't have any specialized gauges.

Small arm solutions channel did a pretty good interview of the CR 6920 versus the Le 6920 if you haven't seen it

That's not in the cards. I stick to just this weapon system. I have over 150k invested in gauging, inspecting, testing, and teaching just about the AR family of weapons.

@Nemesis4x4 Thank you! ☺️

Phosphate is old school, nitride is a more modern coating. Phosphate is porous and will hold lubricant, but it’s also more abrasive. Nitride is non porous & smoother. I personally prefer a slick coating on a bcg, they require less lubricant to operate smoothly. My favorite has always been a polished hard chrome, they will run even when dry If things are clean. And a bonus to a slick bcg is that they are easier to clean, carbon wipes away easily. And that’s the down side to phosphate, the porous nature traps carbon.

Well I own 2 and so far so good. I haven't ran more than 2 or 3 mags in a row to see if the carrier screws come loose, but I can get them staked later on if I need to. They are kind of pricey, but they are chrome and it's supposed to be the best for BCGs.

No.

@nowr2run Thank you! ☺️

@@onna-day7047 Well he couldn't have made such GREAT VIDEO WITHOUT YOU. I GIVE CREDIT WHERE CREDIT IS DUE & YOU'VE EARNED MY REPLY. It's a TEAM EFFORT making these WONDERFUL VIDS.

These aren't new out of the box so it's really not right to say for sure.that this is a manufacturing error. Really they look like someone took the gas keys off before in the past and didn't do the proper diligence in reassembling them.

OCKS screws. There are a few online retailers that carry them. Just google it.

Springco is what he stated in the video.

I also am curious I have an Anderson chrome BCG that is from a bad batch a few years ago, that I'd be curious to see autopsied.

Just get a colt and know ur good.

@@209brandonb Oh yeah. Colts tried & true. 👍🏼

Yes. The firing pins in most modern rifles do not have internal firing pin safeties or springs preventing them from hitting the primer. ARs and AKs do it and it's pretty much never a problem.

It’s normal, especially with AR-10s in my experience.

It's normal but it's also part of why military uses such hard primers. While it's rare slam fires have occurred. Especially in AR-10 and 7.62 x39 ARs with heavy buffers and buffer springs. I've had the latter happen once and a buddy had an old Colt AR set off a round while loading his HD gun in his kitchen. Always keep that muzzle pointed in a safe direction.

@@chloedemeter5473 Really apprecaite the feedback and couldnt agree more on your last point. Thank you.

Gas rings are cheap, replace them and move on, though that is disappointing. A lot of companies seem to have let their QC down to meet demands.

Yes. We do not have an ETA at this time due to our class schedule and other commitments such as gauge orders, repairs, and consult work.

Honestly I wondered the same, try another spring to see if it’s the spring or the hole. Hopefully he sees this and fill us in.

@@goinhot9133 I have several go and no go gauges for the extractor pocket. Each gauge is based on the spring used due to spring dimensions. I use 4 different gauges. I don't show everything on videos. I also cater my instruction based on my audience. For what it's worth, I have never opened a spring pocket excessively using the method shown in the video that resulted in the extractor not capturing a Colt Gold or Sprinco Spring. If I did or mistakenly do so in the future, I would replace it on my dime. I have a bin of TDP Spec Extractors. The extractor spring pockets on extractors are often too small for a proper Colt Gold Extractor Spring or 4/5 Coil Sprinco Springs without using excessive force. Excessive force can diminish the life of the spring. The fix is what I showed in the video or you can replace the extractor. Better have a lot of extractors on hand if you take that approach because most are undersized. Armorer's usually replace things that don't meet their standards, Good Gunsmiths can make changes. I'm both.

@@SchooloftheAmericanRifle thank you for the long response, just trying to learn. Wasn’t doubting what you did, I knew there would be a reason. Thank you for the informative reply.

@@SchooloftheAmericanRifle what dremel pig tail are you using? I like the metal

OCKS

@@NoWr2Run 👍 thanks man

My last response was in more detail but basically it prevents or at least vastly reducing peening and edge roll. Also chipping of the edge which can lead to longer cracks. Look into impact ends of tools like chisels and why/how to prevent mushrooming. The impacts against the cartridge can have the same effect on the extractor. Which can either break it or make it get stuck inside or outside of the hole it's supposed to drop into.

Microbest seems to be a solid BCG. Toolcraft is a mil contractor so they'd be a good choice too. Daniel Defense makes theirs in-house and I've had good experience with them as well.

Every manufacturer has the potential to put out lemons. Thats just how manufacturing goes. Even CNC machines are only as good as the bits they are using to cut the metal. Or as good as the imperfect human that calibrated the machine. When you look for a quality BCG, the consensus seems to be to look for companies with better reputations and better QC so that you have a better chance of getting a good part. But that still doesn't mean you're 100% guaranteed, its just a better chance. Best way imo, is to go with a good brand - BCM, Sons of Liberty Gun Works, Forward Controls Design, Daniel Defense, Microbest, Toolcraft, etc and then watch some more of Chad's BCG physicals and do some at home tests. In several videos he explains some at home ways to "gauge" your parts without actually having the precision gauges on his bench. Also, like he said, make sure that the part mates well with your build, make sure parts are not fitting too loose, or too tight. They could fail a gauge test, but mate well with the intended parts in the gun, because there is a spectrum of sizes that components fall into. I would also recommend getting a plain milspec style carrier. There are "enhanced BCG's" available that have modified components or dimensions that are designed to enhance reliability, but the application is far beyond what many people need. Although the enhancements are nifty and can genuinely do what they state, a well built "mil-spec" BCG will work great and last thousands upon thousands of rounds. The parts are more common and with proper maintenance and inspection, the carrier itself will probably last a lifetime even with incredibly high round counts. Sorry for the book, I just felt compelled to elaborate. I hope this helps.

I have two Colt m4a1socoms a Geissele Urg-i complete clone on a Aero gen2 lower and a Dsa,Geissele,FN barreled upper on a Aero m4e1 lower.They all have Colt bcgs and are 100% reliable.With that being said there's levels of quality but junk is rare nowadays.

Lmt, Daniel defense, bcm.

@@theduck17 eh Toolcraft only makes carriers in house. From what I’ve heard, their bolts are subpar.

I have several go and no go gauges for the extractor pocket. Each gauge is based on the spring used due to spring dimensions. I use 4 different gauges. I don't show everything on videos. I also cater my instruction based on my audience. For what it's worth, I have never opened a spring pocket excessively using the method shown in the video that resulted in the extractor not capturing a Colt Gold or Sprinco Spring. If I did or mistakenly do so in the future, I would replace it on my dime. I have a bin of TDP Spec Extractors. The extractor spring pockets on extractors are often too small for a proper Colt Gold Extractor Spring or 4/5 Coil Sprinco Springs without using excessive force. Excessive force can diminish the life of the spring. The fix is what I showed in the video or you can replace the extractor. Better have a lot of extractors on hand if you take that approach because most are undersized. Armorer's usually replace things that don't meet their standards, Good Gunsmiths can make changes. I'm both.

​@@SchooloftheAmericanRifle Some people are scared to death of voiding a warranty. If you and the owner of those bolt carrier groups took that approach, that guy would still have two unstaked bolt carriers and his crappy screws would still be loose.

Same as why the ends of punches and chisels should be rounded or chamfered. The squared off edge can peen and roll over. For this part it can causing a lip that can either prevent the extractor from being able to slide into it's hole or make it get stuck in there. Can also chip more easily and be the introduction point to longer cracks. Considered the conditions it operates under it's very much in a similar position to a chisel handle. The constant impacts while stripping and seating rounds is much the same. Really, look into chisel and punch handle geometry and why/how to avoid "mushrooming" of the end that's struck with the hammer if you're interested in seeing a lot of detailed breakdowns and images of the effect. That's probably the most common source of info on it. That's where I first learned the concept.

@DVCasey0311 it's made by pof-usa mad scientists and has a bearing roller cam. Anything to reduce friction. Plus how it's made and treated

I don’t recommend the use of the roller cam pin in a non external piston ar

@@benfrank1583 did Eugene Stoner use bearing roller cams?

@@Mr_Clean nope. It's modern shit bro.

@@sackychin6267 can I get a reason please

Looks like Daniel Defense discontinued their chrome BCG. Too bad because I would have liked to have one to try out.