AR15 won't cycle (Update)

[sabot92]

Hey guys, recently bought a new Rogue Defense AR15. Took it to the range today and the first 5 shots went off without a problem. After that, nothing. I can make one shot then it just clicks. It's cycling the cartridge into the chamber but won't shoot. I noticed the cartridges have very light pin holes on the primer but obviously not enough to shoot it. All help is appreciated. Thanks. -Tyler

[300rum]

What kind of ammo are you using?

[sabot92]

The gun is chambered in 5.56 and I'm using Federals XM193F. It was the cheapest I found. It's also 5.56. 55 grain boat-tail.

[jay.sharkbait]

Is the bolt going into battery on the second shot?

It may be short stroking. Some things that cause this in a new AR -

Loose or mis aligned gas block
Loose gas key
Gas port too small

If it is going into battery I would remove the bolt and look at firing pin and make sure there is no debris etc.

Checking head space wouldn't be a bad idea either. If it was too tight it might not go into battery.

[sabot92]

Yes it's going into battery. I have checked both the gas block and key and they are both nice and tight. It's short stroking. Maybe it was just too dirty. I just disassembled everything and cleaned it down. Hopefully that will be the trick. Like I said it was shooting just fine st first then it just went down hill.

[jay.sharkbait]

Yes it's going into battery. I have checked both the gas block and key and they are both nice and tight. It's short stroking. Maybe it was just too dirty. I just disassembled everything and cleaned it down. Hopefully that will be the trick. Like I said it was shooting just fine st first then it just went down hill.

What butt stock?

I know it sounds silly but the a2 or rifle buffer system will sometimes hit the buttstock screw if the screw is too long.

[b23]

I'm wondering if you possibly have a chamber that's a little on the generous side and after it gets a little heat in it and things expand that tiny bit, the ammo you're shooting becomes a little loose in the chamber causing excess headspace and the firing pin is actually pushes the ammo forward when it strikes the primer.  Kinda sounds like an excessive head space problem, whether it's from a generous chamber or undersized ammo, and the firing pin is actually pushing the cartridge forward as it strikes it giving you those light strikes.

[sabot92]

The butt stock is a MFT. I also noticed when I pull the charging handle back while holding the trigger, and then let go of the trigger, the trigger will only click if I push it forward. It won't click on its own when I let go. Not sure if that's an issue or not. And also when I go to lock the upper recover into the lower, my bolt is rubbing against the spring in the stock. Again, not sure if that's an issue or if that's how it is supposed to be.

[fishngamereaper]

Will it fire one round if you manually chamber it then after it cycles it won't shoot the second one.?

[sabot92]

Will it fire one round if you manually chamber it then after it cycles it won't shoot the second one.?

Yes that is correct.

[jay.sharkbait]

The butt stock is a MFT. I also noticed when I pull the charging handle back while holding the trigger, and then let go of the trigger, the trigger will only click if I push it forward. It won't click on its own when I let go. Not sure if that's an issue or not. And also when I go to lock the upper recover into the lower, my bolt is rubbing against the spring in the stock. Again, not sure if that's an issue or if that's how it is supposed to be.

The bolt carrier should be touching a buffer and not a spring.

There is a buffer? Right?

[fishngamereaper]

The butt stock is a MFT. I also noticed when I pull the charging handle back while holding the trigger, and then let go of the trigger, the trigger will only click if I push it forward. It won't click on its own when I let go. Not sure if that's an issue or not. And also when I go to lock the upper recover into the lower, my bolt is rubbing against the spring in the stock. Again, not sure if that's an issue or if that's how it is supposed to be.

If you don't have trigger reset that explains the no fire issue. A lot of AR's will light strike primers when chambering a round. But if your trigger didn't reset it won't fire. Have you cleaned the heck out it, to include compressed air blow out.

[benhuntin]

Dirty?


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[sabot92]

The butt stock is a MFT. I also noticed when I pull the charging handle back while holding the trigger, and then let go of the trigger, the trigger will only click if I push it forward. It won't click on its own when I let go. Not sure if that's an issue or not. And also when I go to lock the upper recover into the lower, my bolt is rubbing against the spring in the stock. Again, not sure if that's an issue or if that's how it is supposed to be.

The bolt carrier should be touching a buffer and not a spring.

There is a buffer? Right?

Yes there is a buffer. Sorry about that. Didn't mean to confuse you. Still learning all of the parts and names. I have not cleaned it with compressed air but I can certainly give that a shot. Any recommendations on lubes, greases, ect?

[jay.sharkbait]

The butt stock is a MFT. I also noticed when I pull the charging handle back while holding the trigger, and then let go of the trigger, the trigger will only click if I push it forward. It won't click on its own when I let go. Not sure if that's an issue or not. And also when I go to lock the upper recover into the lower, my bolt is rubbing against the spring in the stock. Again, not sure if that's an issue or if that's how it is supposed to be.

The bolt carrier should be touching a buffer and not a spring.

There is a buffer? Right?

Yes there is a buffer. Sorry about that. Didn't mean to confuse you. Still learning all of the parts and names. I have not cleaned it with compressed air but I can certainly give that a shot. Any recommendations on lubes, greases, ect?

I've always used break free/ CLP, or Tri flow.

I think frogs lube and all the other Gucci lubes are over rated.

When you go out next time try putting one round in mag and fire. The BCG should lock back. If not it's short stroking and may require more attention.