M4 10" Barrel questions

I

irnbndr

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I am having some sporadic malfunctions with my 10.5" M4.

I think it is a buffer problem but not sure... any advice?
 

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8

8'Duece

Guest
Go with heavy buffer, H4 and a Gas buster charging handle. (I cannot express the significance of the gas buster charger hard enough) Without the release of the gas it's forcing your bolt to over ride to quickly and causing timing problems with chambering the next round. If that makes sense. The gas has to go somewhere, and if it's not going out through a gas buster charger it's pushing way too hard from back to front to quickly.

If that don't cure it, then sell it to me. :)
 

Cabbage Head

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Is it a feeding issue or extraction?

Shorter barrel weapons pose an issue. I tried to get a shorty to work that we took in on a siezure, nothing but problems. Turned out that the barrel was shot out.

If its an issue of extraction/ejection than its a failure in not enough gas working the bolt carrier assembly.:2c:

Side note, is that one of those muzzle brakes that forces the gas forward? Those are cool!
 
I

irnbndr

Guest
Is it a feeding issue or extraction?

Shorter barrel weapons pose an issue. I tried to get a shorty to work that we took in on a siezure, nothing but problems. Turned out that the barrel was shot out.

If its an issue of extraction/ejection than its a failure in not enough gas working the bolt carrier assembly.:2c:

Side note, is that one of those muzzle brakes that forces the gas forward? Those are cool!

Yeah, its a feeding problem. I get a double feed every 70-100 rounds. Not often, but often enough.

Re. side note: No, that is a Noveske KX-3. I love that thing!
 

Cabbage Head

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Ok, that narrows things quite a bit. How many rounds do you have through the barrel?

I like the muzzle brake. Hmmmm, me thinks that I need to look into that........:cool:
 

Olive Drab

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i was referring to diameter not length. pri made big bigger tubes to assist and someone makes a pig tail system which is a longer tube that wraps around the barrel a few times to delay the gas a fraction of a second.
Based on your pic it is the short gas system. 7" tube, with 7" rail system.

Gunnerjohn will tell you the same thing I did.......................sell it to him. :D
 

gunnerjohn

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The shorter tubes and shorter barrels are a bitch. Mine is tempermental with what ammunition I run through it. It likes civilian pressure ammunition with the slower burn rate powder. The faster ammonia smelling military SS109 green tip tungsten core stuff seems to pressure cycle the action too fast for the case to keep up. You will find that your brass will get caught in some of the most painful places(in the gun that is) There are some pig-tail gas tubes on the market available from Brownells and Olympic that create the gas pressure of a full length system. Placing the heavier machine gun buffer in the gun will make a difference too. I am so tired of my 10.5" barrel acting up that I am thinking about going to the longer one. I have heard of some going to the the same buffer and gas tube as the pistol configuration guns. I have not tried this, but it is an option.

P.S.. Pardus... you sheep fucker...
finger007.gif
 
8

8'Duece

Guest
Ok, that narrows things quite a bit. How many rounds do you have through the barrel?

I like the muzzle brake. Hmmmm, me thinks that I need to look into that........:cool:


That is the KX3 Noveske hider. The "Flame Thrower Pig" :D
 
I

irnbndr

Guest
The shorter tubes and shorter barrels are a bitch. Mine is tempermental with what ammunition I run through it. It likes civilian pressure ammunition with the slower burn rate powder. The faster ammonia smelling military SS109 green tip tungsten core stuff seems to pressure cycle the action too fast for the case to keep up. You will find that your brass will get caught in some of the most painful places(in the gun that is) There are some pig-tail gas tubes on the market available from Brownells and Olympic that create the gas pressure of a full length system. Placing the heavier machine gun buffer in the gun will make a difference too. I am so tired of my 10.5" barrel acting up that I am thinking about going to the longer one. I have heard of some going to the the same buffer and gas tube as the pistol configuration guns. I have not tried this, but it is an option.

P.S.. Pardus... you sheep fucker...
finger007.gif

The only problem I seem to be having is with SS109. Maybe that is the culprit. In which case I need to sell the upper, since that is the ammo that I have to use. F'n military. It is strictly a double feed issue though, not ejection. Think that might still be the issue? How about the H4 buffer? I have heard that in several different venues.
 

gunnerjohn

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The only problem I seem to be having is with SS109. Maybe that is the culprit. In which case I need to sell the upper, since that is the ammo that I have to use. F'n military. It is strictly a double feed issue though, not ejection. Think that might still be the issue? How about the H4 buffer? I have heard that in several different venues.

I tried the H4 buffer too. That solved some of the problem until you start getting excited when the zombies are charging, then you get the double feed. It seems that just another inch or two would cure the issue. Brownells #100-000-553EC is the pigtail tube. It retails for $86.50 and they are in stock. Brownells phone number is 1-800-741-0015 and they have no sense of humor. The tube is made by M16 Clinic.
 
I

irnbndr

Guest
I tried the H4 buffer too. That solved some of the problem until you start getting excited when the zombies are charging, then you get the double feed. It seems that just another inch or two would cure the issue. Brownells #100-000-553EC is the pigtail tube. It retails for $86.50 and they are in stock. Brownells phone number is 1-800-741-0015 and they have no sense of humor. The tube is made by M16 Clinic.

I'll try it. Thanks for the advice.

PS: I HATE zombies!
 
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