AR not working properly

[Orbie]

que soundtrack to Team America!

 

[zackmars]

As baboon has said, most likely an issue with the disconnector spring.

Who made the lower? The only halfway decent polymer AR lowers are GWACS/CAVARMS/Foxtrot mike ones.

I suggest destroying your current lower and pickup an Anderson, Aero, or PSA lower.

 

[no2gates]

As baboon has said, most likely an issue with the disconnector spring.

Who made the lower? The only halfway decent polymer AR lowers are GWACS/CAVARMS/Foxtrot mike ones.

I suggest destroying your current lower and pickup an Anderson, Aero, or PSA lower.

That's what I did with mine. I replaced it with an Anderson and worked much better. Not a fan of the polymer lowers.

 

[BigRed]

Maybe I’m wrong but I think the atf would classify it as a full auto.

Maybe.

Pieces of **** make it up as they go.

 

[Mills]

No maybe about it.
Here is law.

Firearms Verification​

National Firearms Act Definitions​

Machinegun​

26 U.S.C. § 5845(b)

For the purposes of the National Firearms Act the term Machinegun means:

• Any weapon which shoots, is designed to shoot, or can be readily restored to shoot, automatically more than one shot without manual reloading, by a single function of the trigger

 

[Maverick44]

Who made the lower? The only halfway decent polymer AR lowers are GWACS/CAVARMS/Foxtrot mike ones.

Cav Arms doesn't make them anymore, and GWACS has gone full retard with an incredibly stupid lawsuit against KE Arms, and they are in cahoots with antigunners.

If you're going to buy polymer, the KE Arms KP-15 is probably the best designed one you can get. Same lineage as the Cav, just improved and made with better material.

 

[rpwilson]

Check the orientation of your hammer spring to make sure it is sitting correctly. If it is backwards, the disconnector wont engage, which allows for slam fires

 

[Dawico]

I'm going with trigger issue. I had a Rock River Arms built AR with their fancy single stage trigger do the same thing. Replaced the trigger and it worked fine after that.

 

[leVieux]

>
Several years back, someone had a similar problem at a public range.

Two over-zealous feds arrested the guy for having a full-auto w/o permits and he wound-up being convicted of a felony.

I would immediately disassemble it and take the pieces to a trusted AR Smith.

leVieux
.

 

[candcallen]

Maybe I’m wrong but I think the atf would classify it as a full auto.

Yep they would phuck you for sure. One of their monkeys would test it and all they gotta say is you had to do it on purpose and offer a plea deal.

 

[candcallen]

I have a polymer AR lower I bought used. I put a PSA 5.56 upper on it. My first time out I put 30 rounds thru. Then a couple days ago after about 20 rounds it started firing 2 or 3 rounds per trigger pull. If I was real light on the trigger it was one shot but a killer more pressure and bang bang. Since I was in the mide of now where I tried different mags and d en a different upper. Same text. So iam thinkkng trigger issue.

My question is an this be fixed or am I looking at anew trigger?

Thanks,Ed

Might wanna change the title to AR not working properly. Lol

No one who works for or with the ATF has any personal integrity.

If the problem isn't a trigger pin out of spec or walking out, I would strongly suggest all new trigger and disconnector. Do not try to touch the present parts with tools, i.e. dremel. ATF monkeys would phuck you for that too regardless of your intentions.

See my previous posts about ATF and integrity. The 2 are mutually exclusive.

 

[benenglish]

Might wanna change the title to AR not working properly. Lol

You laugh but I think that's a good idea.

ETA - Done.

I spent too many years with federal officers, agents, special agents and inspectors who had no sense of proportionality. For some jobs, it's part of the job to find your own cases. There's no sense in handing them one on a silver platter.

 

[Orbie]

Came back to this thread since there were additional replies. That’s when I noticed OPs name. I will also reach out to him via PM. I’d like to say that this may be the lower he purchased from me. If so, it’s a New Frontier Armory lower with a PSA trigger and a mix of PSA and New Frontier lpk. I never had any issues with the lower and I purchased it new around 2011.

What would cause it to function properly on first range trip and then next trip, have this issue?

Edit: corrected the lpk

 

[Fishkiller]

I just wanted to know if he wanted to sell it.

maybe

 

[zackmars]

Came back to this thread since there were additional replies. That’s when I noticed OPs name. I will also reach out to him via PM. I’d like to say that this may be the lower he purchased from me. If so, it’s a New Frontier Armory lower with a PSA trigger and a mix of PSA and New Frontier lpk. I never had any issues with the lower and I purchased it new around 2011.

What would cause it to function properly on first range trip and then next trip, have this issue?

Edit: corrected the lpk

If its a missing diconnector, the problem won't occur 100% of the time

It could be the spring was out of spec and has now worn to this point

Could be the lower's pin holes have egged out resulting in improper sear engagement

 

[zackmars]

Cav Arms doesn't make them anymore, and GWACS has gone full retard with an incredibly stupid lawsuit against KE Arms, and they are in cahoots with antigunners.

If you're going to buy polymer, the KE Arms KP-15 is probably the best designed one you can get. Same lineage as the Cav, just improved and made with better material.

Yup, I'm aware, but point still stands, if its a polymer lower and it doesn't have any of the above roll marks its trash

 

[cycleguy2300]

Check the orientation of your hammer spring to make sure it is sitting correctly. If it is backwards, the disconnector wont engage, which allows for slam fires

Good to know!

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[BeatTheTunaUp]

Good to know!

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You sure? I can see a weak hammer from a backwards spring, but I don't see how it can affect the geometry of the hammer and disconnector.

 

[baboon]

You sure? I can see a weak hammer from a backwards spring, but I don't see how it can affect the geometry of the hammer and disconnector.

You can always looks at the BCG to see if the firing pin is stuck forward.

 

[cycleguy2300]

You can always looks at the BCG to see if the firing pin is stuck forward.

JbWeld will do that...

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