[NRAHighPowerShooter]

Ok.... as I had posted in my other topic, my AA sear broke and they are sending me a new one... my question is this...I assume that any sear I buy from coles, Numrich, and the other parts houses, needs to be machined like the bolt and the other internals? or are they drop in?

 

[mrbieler]

Funny you should post this. Your issue with a broken AA sear had me wondering. I ran out to the garage a little while ago and was going to respond to your other post.

My AA gun is fine, but I picked up a set of internals at a good price and had them machined by Brian Penley and set up with the KMP sear and trigger as spares. The KMP sear dropped right into the AA bolt and functioned fine with the AA (wise lite style) trigger. The KMP sear is much beefier then the AA sear.

Brad at Gunthings has KMP sears for sale separately.

Good luck.

 

[mrbieler]

Took my AA 1919 out yesterday and had fun with a friend and his L4A4.

The gun functioned flawlessly through 200 rounds of .308. We were both clanging plates and having a good time.

Took the gun apart when I came home and found this:

The AA supplied sear is too loose in the milled slot and is being deformed. It is now cockeyed in the slot which will compound the issue. I have a total of 500 rounds through the gun. I seriously doubt the sear will survive another 500.

Thankfully, the slot in the bolt works nicely with the KMP sear and the AA trigger works with the KMP sear as well. I dropped my spare sear in and will order another spare from Brad at Gunthings today. I don't know where the AA sears come from.

I emailed these and other pics to AA last night and will call James and Albie today to get it squared away. Hopefully, they will do something quickly.

Bummed about this. Otherwise, the gun has been fine and James has responded quickly to my questions in the past. I'm pleased overall and if they respond to this promptly, I really can't complain. I've found much worse from folks like Colt and S&W...

 

[KABAR2]

Ok.... as I had posted in my other topic, my AA sear broke and they are sending me a new one... my question is this...I assume that any sear I buy from coles, Numrich, and the other parts houses, needs to be machined like the bolt and the other internals? or are they drop in?

If you are talking parts kits they come with a full auto sear which will be discarded, the sear slot in the bolt must be machined to accept a wider semi-auto sear, I don't think Coles or Numrich sell semi-auto parts. The idea is ATF wants it so you can't just replace a full auto sear with a semi-auto sear - no drop-ins other wise you could replace the semi auto sear with the full auto and be in violation of the law by posessing a full auto weapon.

 

[Commander47]

Just from looking at the picture it appears the AA sear rails are much thinner. I have to wonder about your firing pin spring and where the stress is coming from on the bottom to want to bend it like that. Something is exerting a lot pressure on the bottom of that sear.

KMP sears are much more robust. I also find, however, that the KMP sears have to be fitted to each bolt.

One will not just slide into another. Once they are matched up, that is pretty much the way you should leave it.

 

[mrbieler]

The AA sear rail mimics the size of the full auto sear rail, but the bolt is cut for deeper rails. The KMP sear I took out of my other bolt neatly slid in.

This morning I called Albie at AA and left him a voice mail and I sent an email to AA with the photos above and some others, but haven't heard back from anyone yet. Hopefully by tomorrow.

 

[NRAHighPowerShooter]

I ordered a KMP sear and trigger

 

[mrbieler]

Spoke with Albie today and per his instructions boxed up and mailed in my bolt and sear. Based on our talk, I believe the sear is the issue, but I'll post his follow up when I get it.

 

[NRAHighPowerShooter]

WOOHOO!!! I just got in my KMP trigger and sear... a work of art!!!! they fit my AA1919 perfectly!!! everything seems to look ok after installing the parts and it dry fires... so... I'll be trying it out this coming Thursday after HighPower practice

 

[mrbieler]

Cool. Looking forward to a positive range report.