Dedicated 22lr upper misfire???

[ILVH8RS]

Ok, so I am obviously new to the idea of having a dedicated 22lr upper for my AR. Have an ATI AR15 and recently aquired an ATI 22lr upper. Took it to the range and something rather strange happened. Using BDM mags; they seem to seat perfect and feed no problem but every few rounds I get a click like the round was a dud. Eject, feed another and it fires. But there was no pattern to this. It was completely random. Went through almost a full mag with no problems, the next mag every couple of rounds were no go. Checked the "dud" rounds against the fired casings and they had indeed been hit what seemed like fully and properly. But no fire...Am I missing something here? Any assistance would be great...thanks

[uxo2]

Lower build info please.

Stock hammer spring.....
DID YOU CLEAN the FP channel?

[tanakasan]

Need the Taccom reliability kit! Pressure plug works wonders.

Robert

[Diskrete]

Is there a gap between the bolt face and the barrel face? If there is, the bolts probably new and needs to be broken in. If you use mini mags for about 3-400 rounds you should be good. I know its been hard to find them though too. What you can also do is grab a dremel and polish up wherever its tight. Try looking at the face of the bolt as you slowly put it into battery, the top piece that protrudes out where there would be a gas tube if it were any other bolt tends to tighten up in the area above where the barrel and bolt meet. Check to make sure you're extractor is clearing the opening for it along the barrel. I noticed some binding in the inner guide plate where the bolt rides, some flashing from being pressed was still kind of there. Basically cycle your bolt slowly to find any possible binds, they should work themselves out, but you can definitely help the process along... I know the ATI/chiappas upper can benefit from a light deburring and polishing to the barrel, they get a bad rep but ATI is quick to help when you contact them. Once its broken in, you'll have a lot less problems.


And don't DRYFIRE! The material the barrel extension is made from is kind if soft and will cause feeding problems, grab some snap caps. try the taccom reliability kit and you'll be solid.

I recently grabbed a dpms upper, taccom 7" barrell, and utg hand guard. Had a new ATI bolt and it took some massaging of both the upper and the bolt itself.

Sent from my HTC_Amaze_4G using Tapatalk 2

[shadow65]

Need the Taccom reliability kit! Pressure plug works wonders.

Robert

This.

[ILVH8RS]

Thanks for the suggestions guys, Apologize if I left any info out, the upper is basically a stock ATI lower. No additions there yet...The upper is well broken in, got it form a friend who had put at least a couple hundred rounds through it. Checked the cycling and everything seems to operate as intended and nice and smooth. No marring or signs of catching in the wrong places but i am also not a gunsmith so perhaps I missed something. And before I look to stupid, yes she was thurroughly cleaned before firing. I wil look into that Taccom kit....any heads up on where the best place is to get one?

[ILVH8RS]

Don't know if it is pertinent to mention but the upper is polymer...not sure if that makes a difference or not...and as far as deburring and polishing the barrel...don't know that that is something I would want to attempt on my own. Simply never dug that deep into it before? Healthy cleaning after firing but that's about it.

[lordres]

Was it remington golden bulk?

[ILVH8RS]

Mixture of Remington...? not sure sure exactly what...older looking 50 round green boxes... And Winchester. Tried to separate to see if it was one or the other and both had same effect.

[hakenlag]

Was it remington golden bulk?

You beat me to it!

OP, before blaming your upper, switch ammo. I've found Remington rim fire ammo to be somewhat unreliable.

[uxo2]

[lordres]

I've found Remington Golden and Winchester HV to be pretty bad ammo. I guess they work fine in the revolver, but not so much for the semi's.

[NorCalDustin]

You beat me to it!

OP, before blaming your upper, switch ammo. I've found Remington rim fire ammo to be somewhat unreliable.

Frankly... Anyone with a dedicated upper or conversion kit can benefit from the TACCOM Rimfire Reliability Kit. It doesn't matter if its the ammo today or not. Maybe next year all he can get is really crappy ammo? Well, the Reliability kit helps to keep it going reliably.

http://taccom3g.com/22RF_RELIABILITY_KIT.html

[hakenlag]

Frankly... Anyone with a dedicated upper or conversion kit can benefit from the TACCOM Rimfire Reliability Kit. It doesn't matter if its the ammo today or not. Maybe next year all he can get is really crappy ammo? Well, the Reliability kit helps to keep it going reliably.

http://taccom3g.com/22RF_RELIABILITY_KIT.html

Possibly. But if there's no primer at the point where the pin strikes, no matter how cool or well designed the mechanism is, it's not gonna go bang. If it involved multiple pins that simultaneously hit at three or more points on the rim, it would probably make even cheap ammo much more reliable. The main issue with cheap ammo is that primer doesn't get sloshed around the entire rim.

I've picked up many discarded duds at the range with perfectly good pin strikes. Almost every time, if chambered so the pin hits a different spot, they go bang. Of those that failed, after pulling out the bullet there was no primer at all. I'm sure the product you're endorsing is very good but it can't make up for a lack of primer.

[ILVH8RS]

Definitely agree taht bad ammo could be the culprit but I have since tried now four different types with the same random results. Though I did notice that the Remington was more prone to the issue than the others. CCI tended to be the most reliable. I am going to see about procuring myself one of those reliability kits as well. Seems the general concensus is that they are well worth it...thanks everyone for the advice.