Post by: sabot92 on October 14, 2016, 07:01:30 PM
Post by: 300rum on October 14, 2016, 07:03:12 PM
Post by: sabot92 on October 14, 2016, 07:27:19 PM
Post by: jay.sharkbait on October 14, 2016, 07:35:26 PM
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.
Post by: sabot92 on October 14, 2016, 08:08:47 PM
Post by: jay.sharkbait on October 14, 2016, 09:12:47 PM
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.
Post by: b23 on October 15, 2016, 12:53:06 PM
Post by: sabot92 on October 15, 2016, 01:31:03 PM
Post by: fishngamereaper on October 15, 2016, 01:41:07 PM
Post by: sabot92 on October 15, 2016, 01:44:17 PM
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.
Post by: jay.sharkbait on October 15, 2016, 01:48:57 PM
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?
Post by: fishngamereaper on October 15, 2016, 01:57:10 PM
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.
Post by: benhuntin on October 15, 2016, 02:02:18 PM
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Post by: sabot92 on October 15, 2016, 02:46:59 PM
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?
Post by: jay.sharkbait on October 15, 2016, 03:17:42 PM
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.
Post by: sabot92 on October 15, 2016, 07:44:23 PM
Post by: fishngamereaper on October 15, 2016, 08:01:58 PM
Post by: 300rum on October 15, 2016, 08:03:43 PM
Post by: 300rum on October 15, 2016, 08:04:20 PM
Post by: JimmyHoffa on October 15, 2016, 08:09:16 PM
Post by: JLS on October 15, 2016, 08:11:25 PM
Open up the upper from the lower, and check your trigger reset. Press tigger, hold it in. Cock hammer, then slowly let out trigger, and watch for the reset. Is this happening okay?
Get a new magazine and see if you get lockback on an empty like jay.sharkbait recommended, then see if it will chamber a round.
Post by: fishngamereaper on October 15, 2016, 08:19:46 PM
Post by: sabot92 on October 15, 2016, 08:35:20 PM
Also make sure gas rings are staggared on your bolt.
Can you explain that please? I know what the gas rings are but don't know what you mean by staggered. I'm only using a 30 round PMAG magazine at the moment. Recoil is very light. I have checked gas block and key and made sure they were tight. Cleaned everything multiple times.
Post by: fishngamereaper on October 15, 2016, 08:43:48 PM
Also make sure gas rings are staggared on your bolt.
Can you explain that please? I know what the gas rings are but don't know what you mean by staggered. I'm only using a 30 round PMAG magazine at the moment. Recoil is very light. I have checked gas block and key and made sure they were tight. Cleaned everything multiple times.
Slots in the rings shouldn't line up. Gas will blow by them and reduce ability of the BCG to function. Make sure the slots are all in different positions.
Post by: sabot92 on October 15, 2016, 08:54:40 PM
Post by: JimmyHoffa on October 15, 2016, 08:57:17 PM
Ok I just made sure of that. I think I will have to take it back and have them mess with it. The bolt keeps hanging up only when there is a round in the chamber. If I pull the charging handle back with the gun empty it functions just fine.Empty meaning no magazine in the well or an empty mag inserted?
Post by: JLS on October 15, 2016, 09:07:52 PM
Also make sure gas rings are staggared on your bolt.
This makes no difference at all. The slots are compressed whent he bolt is seated in the bolt carrier.
Post by: JLS on October 15, 2016, 09:10:38 PM
Ok I just made sure of that. I think I will have to take it back and have them mess with it. The bolt keeps hanging up only when there is a round in the chamber. If I pull the charging handle back with the gun empty it functions just fine.
okay, so if you rack the charging handle to chamber a round, does it seat? If there is one in the chamber, and you rack the charging handle, does it eject a round and seat the other?
Post by: sabot92 on October 15, 2016, 09:47:48 PM
Ok I just made sure of that. I think I will have to take it back and have them mess with it. The bolt keeps hanging up only when there is a round in the chamber. If I pull the charging handle back with the gun empty it functions just fine.
okay, so if you rack the charging handle to chamber a round, does it seat? If there is one in the chamber, and you rack the charging handle, does it eject a round and seat the other?
It's not looking like the shell is seating properly. I will not eject a shell when I pull the charging handle back. The shell seems somewhat stuck in the chamber. I have to tip my gun and shake it out of the chamber.
Post by: sabot92 on October 15, 2016, 09:49:26 PM
Ok I just made sure of that. I think I will have to take it back and have them mess with it. The bolt keeps hanging up only when there is a round in the chamber. If I pull the charging handle back with the gun empty it functions just fine.Empty meaning no magazine in the well or an empty mag inserted?
Both.
Post by: fishngamereaper on October 15, 2016, 09:55:24 PM
Also make sure gas rings are staggared on your bolt.
This makes no difference at all. The slots are compressed whent he bolt is seated in the bolt carrier.
I will disagree but that can be a different thread. ;)
Post by: fishngamereaper on October 15, 2016, 10:02:01 PM
Post by: jay.sharkbait on October 15, 2016, 10:18:09 PM
Post by: JLS on October 15, 2016, 10:33:41 PM
Also make sure gas rings are staggared on your bolt.
This makes no difference at all. The slots are compressed whent he bolt is seated in the bolt carrier.
I will disagree but that can be a different thread. ;)
I'll test it tomorrow if you want. I've tested it, and I've also heard straight from Ken Elmore that it makes no difference.
Post by: JLS on October 15, 2016, 10:37:08 PM
Since your gun is brand new I would take it back rather than mess around with trying to fix what may or may not be wrong with it. Let us know what the outcome is.
I agree 110% with this. Your gun has some issues with machining and/or parts. I am assuming you are not overly familiar with these rifles. Given that plus it's brand new I would take it back to the dealer and have them make it right.
Post by: ellensburgpo on October 15, 2016, 10:47:26 PM
Post by: fishngamereaper on October 15, 2016, 11:23:32 PM
Also make sure gas rings are staggared on your bolt.
This makes no difference at all. The slots are compressed whent he bolt is seated in the bolt carrier.
I will disagree but that can be a different thread. ;)
I'll test it tomorrow if you want. I've tested it, and I've also heard straight from Ken Elmore that it makes no difference.
I've read some of kens stuff. But in 18 years of running, building, fixing, cleaning and teaching AR platform's I have always been religious about them dam gas rings. It's something engrained in me. So, I always recommend people check them. I have on isolated occsssions seen them be the cause of function problems. Sorry, old habits are hard to break. :chuckle:
Post by: 300rum on October 16, 2016, 06:55:09 AM
From what you are describing, I would imagine it is a headspace issue...
Post by: 300rum on October 16, 2016, 06:56:23 AM
Also make sure gas rings are staggared on your bolt.
This makes no difference at all. The slots are compressed whent he bolt is seated in the bolt carrier.
I will disagree but that can be a different thread. ;)
I'll test it tomorrow if you want. I've tested it, and I've also heard straight from Ken Elmore that it makes no difference.
I've read some of kens stuff. But in 18 years of running, building, fixing, cleaning and teaching AR platform's I have always been religious about them dam gas rings. It's something engrained in me. So, I always recommend people check them. I have on isolated occsssions seen them be the cause of function problems. Sorry, old habits are hard to break. :chuckle:
Post by: sabot92 on October 19, 2016, 01:28:20 PM
Post by: Alchase on October 19, 2016, 06:53:17 PM
Post by: jay.sharkbait on October 19, 2016, 07:23:42 PM
Just wanted to give an update. I took the gun back to the shop and they tested it and found out that the BCG was not lining up in the feed ramp properly so they filed it down a bit and did some test shots and the gun performed well. Thanks to everyone for all of your help and advice.
:yike:
Post by: JLS on October 19, 2016, 07:24:55 PM
Just wanted to give an update. I took the gun back to the shop and they tested it and found out that the BCG was not lining up in the feed ramp properly so they filed it down a bit and did some test shots and the gun performed well. Thanks to everyone for all of your help and advice.
:yike:
Makes you wonder about the machining process, eh?
Post by: 300rum on October 20, 2016, 06:09:28 AM
Post by: fishngamereaper on October 20, 2016, 06:21:44 AM
Just wanted to give an update. I took the gun back to the shop and they tested it and found out that the BCG was not lining up in the feed ramp properly so they filed it down a bit and did some test shots and the gun performed well. Thanks to everyone for all of your help and advice.
:yike:
:yeah: :yike: :yike:
I'm sure they just filed down a locking lug or two. No biggy.. :rolleyes:
Post by: Jburke on October 20, 2016, 08:28:35 PM
Makes me wonder more about the shop it was bought from/brought back to.Makes you wonder about the machining process, eh?Just wanted to give an update. I took the gun back to the shop and they tested it and found out that the BCG was not lining up in the feed ramp properly so they filed it down a bit and did some test shots and the gun performed well. Thanks to everyone for all of your help and advice.
:yike:
Post by: lee on October 21, 2016, 09:26:45 AM
I'm sure they just filed down a locking lug or two. No biggy.. :rolleyes:
[/quote]
Are the lugs hardened? If so,... most hardening processes are to the surface of the metal. Filing off the surface material can greatly affect the hardening value.
Lee
Post by: jay.sharkbait on October 21, 2016, 05:45:47 PM
I'm sure they just filed down a locking lug or two. No biggy.. :rolleyes:
Are the lugs hardened? If so,... most hardening processes are to the surface of the metal. Filing off the surface material can greatly affect the hardening value.
Lee
[/quote]
That's why there are so many.
Extras...