AR-15 BS Thread

"H-Minus" and "Strike Hold"

 

Cross posting, looking for recommendations.

My Aero AR10 started acting up this week. Long story, but I started having failure to eject issues last week when I went out to shoot. Every round would fail to eject and cause a double feed. I traced it back to the extractor on the BCG. It would either disengage the empty cartridge before it cleared the chamber (so it would only pull it half way out), or do the exact opposite and pull it out but not release it. As the bolt moved forward again, the empty casing would stick out of the ejection port at a 45* angle and then make contact with the leading edge of the ejection port and get stuck between the bolt face and cause a jam. Contacted Aero and still going back and forth with them about different things to try before they even mention the word "warranty". Only have about 200-300 rounds through the build.

Things I've tried:

• Everything is clean and /or oiled and shows no physical signs of wear or damage.
• Tried a separate BCG and had no failure with two different types of ammo.
• After removing the O-rings from the extractor spring, the BCG now will not let go of the casing unless I physically reach in to the ejection port and pull it out. (Takes a little force to get them out). The casings are getting chewed up pretty bad. Two O-rings total and I tried it in several configurations (both rings in, one ring, no rings and just the spring)

The BCG is the nickel boron coated version from aero and some dude at the range that saw I was having issues mentions that nickel boron makes the surface of the metal harder and in turn makes the tolerances closer so the BCG might be tight and needs to be broken in. That true? I know coatings do take up some tolerance, but I'd imagine a company with the name "Precision" would account for that if necessary.

Separate issue: Now this week I started having double fire issues. Fire on trigger pull and fire again on slow release to reset. Normally that would be cool (like the echo trigger), but it's not consistent so it's all coming apart this weekend to check for abnormalities. I'm lost.

 

If I only had the funds. Spent to much last month, have to be good this month.

On a side note, I got my concealed pistol license in the mail. Took less than two weeks after I put in my paper work. Not really to bad. They told me up to 45 days. Felt weird to carry for the first time yesterday. Just not used to it yet. Of course, I want another carry gun now. CZ P07 has really caught my attention.

 

I could be missing something in your post but it sounds like the spring on your extractor is bad. You said you tried a new bolt group and it worked fine? If so remove the extractor from the good group, and use it to replace the extractor in question and see if that works.

 

Built about a year ago. Already in contact with Aero, going back and forth with them currently.

I though about doing that after I came home from the range the second time and was cleaning everything. Will try that soon. Just trying to get Aero to send me or sell me a new extractor and spring has become a hostage negotiation.

 

Swap the extractor spring but also compare the extractors side by side and see if one is out of shape.

For the other issue check your trigger pins, see if you can replicate the issue with dry fire (upper removed, using your hand to catch the hammer)

 

Whatever the outcome keep us updated.

 

It was funny GSG22 cloned the HK mp5 before HK and then HK got mad because their gun got cloned!

 

Red Falcon!

 

I want to SBR one so bad, I think it would be epic with a can.

 

I love mine! Though mines a 9mm and not a 22lr....but still quite a lot of fun!

 

My AR9 "pistol" is like an SBR with a "hand brace." Haha!

 

Isn’t that awesome!

 

What’s happening a lot now is it hat dealers are getting deals like buy 10 AR’s and get 3 free etc from disturbers and cost averaging....my local dealer had Ruger AR’s where he got 4 free when bought 10 which he sold them for $459 each....

 

I do feel lucky. Most of my buddies waited way longer than I. That's an interesting law. I'm kinda surprised everyone isn't required to get training before they can purchase firearm. We've all seen idiots at the range. Hell, I've even had family members almost be shot by idiots that don't know what they are doing. Still would suck to have to wait that long.

 

Same in Michigan. Just have to do that background check form, if you have an concealed permit you get to skip that part. So now for me, it's easy peazy. To bad I'm broke.

 

It's pretty much the same in Michigan, but you are required to register your handgun with the police in 10 days from purchase. You just drop your info off to them, nothing special.

 

Takes me longer to fill out the paperwork and open my wallet LOL but same here with a permit no NICS check just pick out your rifle and head to the checkout counter! LOVE IT!

 

So if i wanted to build an AR in 6.5Grendel i can use a regular AR15 lower right? How about the upper?

I know i need a 6.5 Grendel specific BCG and barrel just not sure what else. Ive got some research to do!

 

Lower will be fine. You need a 6.5 specific bolt, not the whole BCG. You can get a barrel/bolt set and swap into a regular AR-15 and be set.