Do You Need The Extractor O ring???

I have feeding/extracting problems with my aero ar 10 build. My extractor HAS the o ring on it from the factory. Should I maybe try taking the o ring off?

Absolutely Sprinco 5 coil without the O-ring…..I was chewing brass and deleted the O with a Wilson Combat CS extra power spring with a 10.5" mid-length unsuppressed. There are many companies who offer the beefy spring and they are the only way I've been running all my AR platforms chambered in 5.56/.223…..Very good video….Hat off to you for making this…..Hope people watch and learn…..

At the beginning of this video if you’re wearing headphones you can hear what sounds like someone taking a massive dump and flushing the toilet. 😂

How the HELL did you get that O Ring on the spring??!

FYI, BCM recommends the use of this Oring with barrels less then 14.5 and all 300 ACC BLK. The reason is that that are prone to over-gassing because of shorter gas systems. Even then, I only use them if I have extraction issues.

Great video, well explained.👍👍

Hoping this solves my problem! I just did an AR10 build with all Aero Precision components and it sometimes doesn't feed. Also, every 4th or so round, I'm not sure what's happening but the new round gets stuck going in to battery and leaves a nice dent where the bottle neck occurs. I saved the rounds hoping to extract the bullet and powder out of them to use for reloading but was told not to try to shoot it because of the damage to the casing. At $1 a round for range ammo currently, I'm going to salvage as much as I can!

Did you have any extraction issues before you took out your O-rings?

So nice to see a "real" 20-inch A2 style rifle out there, no pic rail top, lighter, slimmer integral carry handle and sights… just makes this middle-aged shooter go "Aaaaaahh, that's what I like." 😉
I just found an old slickside pre-A1 style rifle (think SP1) and I'm basking in the 1 in 12 twist, chrome bore, perfectly balanced glory of it! The entire rifle is lighter than my "M-Forgery."
Peace.

Excellent review.

My understanding is they are used for ar pistols with barrels shorter than 14.5 inches and all 300 blackout uppers.

Focus bro….

Just bought an 8.5 300 Blk from PSA.it would not go into battery or grab the case rim. Removed the O ring and Works beautiful.

Just had an extractor pin shatter opened it up and it had the o ring. I’ve never had one. Seems like it risks too much ridgidity. I have a pistol setup, but I also have a heavy bolt and a higher tension spring. So I’ll assume the higher gas pressure is less an issue than wearing out the extractor. Thanks for the feedback

This might be another issue or just FUD, but I’ve heard that these O-rings might crack, split, or otherwise fail when the temp drops below -20°F. Not that it happens a lot, but I do live in Wisconsin, so Simo Häyhä-esque conditions aren’t impossible. What are your thoughts on that? Also, my main rifle has a 20” bbl and a rifle-length gas system.

You’re an absolute life saver. My failure to feed was due to the o-ring on my extractor.

Thanks for the info

I have run into issues with excess extractor tension much more often than having too little. Iv have found that either a 5 coil or a 4 coil Springco extractor spring with incert only is the best way to go about it. I currently have a 16” mid length Criterion barrel build that had issues with the 5 coil so I put the 4 coil in there and it ran great. If you’re chewing up brass and or denting the hell out of you’re brass then you probably have too much tension if you’re hun isn’t over gassed as hell. The standard spring with the incert and O ring is almost always too much tension unless you’re running a MK18. That’s my experience anyway.

Installed one on my PSA made Extractor and on my dads DMPS A2 heavy barrel carbine. No issues and better for insurance sake.

They are for SBRs and you have a 20 inch long barrel. Not needed. Old news.

Great video! I was questioning the springs in my extractor and wondering about the flaking as well. Thanks much for posting!

sprinco 5 coil extractor spring without the o-ring is the best setup by far, those springs last far longer than any other spring and far, far longer than the o-ring. and for overgassed systems like short ar's that extract under higher than normal pressure it's a great reliability upgrade too

I have found you don’t need the O ring if your using a 5 coil extractor spring.

Got a new upper in 6.5 Grendel. Having issues loading new round and also ejecting to the 1:00. Bolt face is practically solid brass from account of all the brass shavings. Realized new rounds when in the chamber had issue with extractor clamping around ring. Removed o ring and bolt goes to battery much easier now

Cause me a lot of issues with my BCG. That damn O ring.

No donuts. Normally use a 4 coil extractor spring with the black insert…. if you need more tension, swap to a 5 coil spring.

My BCM bolt came with the crane o ring. Directions in the bag says to install the o ring with barrels shorter then 14.5 and all 300 blk. Lower pressure systems don't need the o ring.

Not a fan of the o rings but if you have weaker springs or have an insert thats gotten hard I can see using one in an emergency.

Polish or hone the chamber will help the extraction of the brass. God bless and good video!!

I’m building a 10.3 ar pistol build with carbine length gas system what do I do use the o ring or buy a stiffer spring (if so which one)or that bcm extractor Kit?

Mine one doesn't have it right when I bought it.