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Posted: 5/28/2012 12:23:50 PM EDT
| So i have tried everything. New buffer, new buffer spring, 5 coil extractor spring, black insert. Ive tried them in many different orders and still no change. The casings are extracting at a sharp 1 o clock and with almost no velocity basically just getting lobbed out. Im losing my patience with this gun. Any suggestions? |
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So i have tried everything. New buffer, new buffer spring, 5 coil extractor spring, black insert. Ive tried them in many different orders and still no change. The casings are extracting at a sharp 1 o clock and with almost no velocity basically just getting lobbed out. Im losing my patience with this gun. Any suggestions? Is this a new thing? How many rounds have you shot? Different types of ammo? Have you ever had a single malfunction? General consensus is if your not having any problems there is nothing to fix…. EDIT: If your still looking for something to mess with try a new ejector spring…. |
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So i have tried everything. New buffer, new buffer spring, 5 coil extractor spring, black insert. Ive tried them in many different orders and still no change. The casings are extracting at a sharp 1 o clock and with almost no velocity basically just getting lobbed out. Im losing my patience with this gun. Any suggestions? What ammo? Is it weak Wolf or powerful milspec? It sounds like your rifle is extracting because the casings are being thrown from the rifle. Since the casings are being thrown clear, there are some other things to check to get them out farther/faster. 1- Ensure your chamber is clean. Use a new chamber brush and good solvent (not oil or just clp) to clean any debris or build up from the chamber. Scrub the crap out of the chamber to get it good and clean. 2- Ensure your extractor is in spec. The hook should be sharp, lightly drag the inner face across the pad of your thumb to feel if it is sharp––don't slash yourself. If the extractor hook is work or out of spec, it may be letting go of the empty casing too soon,,,not holding onto the casing until it is pushed out by the ejector. Keep the new version extractor buffer spring and black colored insert. 3- Replace the ejector spring. Maybe the ejector spring is weak or broken. This is what pushes the casing off of the bolt face and out of the ejection port. 4- Run a regular carbine buffer. It is lighter in weight so there is less resistance to the rearward motion of the bolt carrier. If you get bolt bounce, then you go up in buffer weight to an H, H1, H2, etc. |
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So i have tried everything. New buffer, new buffer spring, 5 coil extractor spring, black insert. Ive tried them in many different orders and still no change. The casings are extracting at a sharp 1 o clock and with almost no velocity basically just getting lobbed out. Im losing my patience with this gun. Any suggestions? Not enough info to diagnose. What's the rig ? What's the ammo ? |
| I run the american eagle 55 grain ammo. And my ejector spring was just replaced. The rifle has done this since i got it. It has about 400 rounds through it. I have tried an h buffer and a carbine buffer and even lighter buffer springs. My only thought is the ammo could be underpowered |
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I run the american eagle 55 grain ammo. And my ejector spring was just replaced. The rifle has done this since i got it. It has about 400 rounds through it. I have tried an h buffer and a carbine buffer and even lighter buffer springs. My only thought is the ammo could be underpowered Also its a dpms ap4 rifle |
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I run the american eagle 55 grain ammo. And my ejector spring was just replaced. The rifle has done this since i got it. It has about 400 rounds through it. I have tried an h buffer and a carbine buffer and even lighter buffer springs. My only thought is the ammo could be underpowered Also its a dpms ap4 rifle OK, so it's a carbine-gassed 16" Are you seeing any marks on the shell deflector ? An over-gassed rig can bounce brass off the deflector and they hit around 1:00 If no marks, then you may have a gas system problem. Check the gas system from the gas port back to the carrier for leaks, misalignment. Check the rings. Does the carrier move freely within the carrier tunnel ? Ensure that the gas tube is not dragging on the gas key. Does the bolt lock back on the last round ? If the bolt locks back you are NOT undergassed. Just ensure that you are locking against the bolt and not the carrier. |
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I run the american eagle 55 grain ammo. And my ejector spring was just replaced. The rifle has done this since i got it. It has about 400 rounds through it. I have tried an h buffer and a carbine buffer and even lighter buffer springs. My only thought is the ammo could be underpowered Also its a dpms ap4 rifle OK, so it's a carbine-gassed 16" Are you seeing any marks on the shell deflector ? An over-gassed rig can bounce brass off the deflector and they hit around 1:00 If no marks, then you may have a gas system problem. Check the gas system from the gas port back to the carrier for leaks, misalignment. Check the rings. Does the carrier move freely within the carrier tunnel ? Ensure that the gas tube is not dragging on the gas key. Does the bolt lock back on the last round ? If the bolt locks back you are NOT undergassed. Just ensure that you are locking against the bolt and not the carrier. The gas rings are fine the bolt locks back every time and there are marks on my deflector but i put a heavy spring and buffer in with no Change what so ever. How would i check if the gas tube is rubbing? |
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I run the american eagle 55 grain ammo. And my ejector spring was just replaced. The rifle has done this since i got it. It has about 400 rounds through it. I have tried an h buffer and a carbine buffer and even lighter buffer springs. My only thought is the ammo could be underpowered Also its a dpms ap4 rifle OK, so it's a carbine-gassed 16" Are you seeing any marks on the shell deflector ? An over-gassed rig can bounce brass off the deflector and they hit around 1:00 If no marks, then you may have a gas system problem. Check the gas system from the gas port back to the carrier for leaks, misalignment. Check the rings. Does the carrier move freely within the carrier tunnel ? Ensure that the gas tube is not dragging on the gas key. Does the bolt lock back on the last round ? If the bolt locks back you are NOT undergassed. Just ensure that you are locking against the bolt and not the carrier. The gas rings are fine the bolt locks back every time and there are marks on my deflector but i put a heavy spring and buffer in with no Change what so ever. How would i check if the gas tube is rubbing? Sounds to me like the rifle is functioning ok. Check to see if it looks centered in the upper. You will be able to see un even wear marks on the tube. How are you cleaning and lubing parts? |
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The gas rings are fine the bolt locks back every time and there are marks on my deflector but i put a heavy spring and buffer in with no Change what so ever. How would i check if the gas tube is rubbing? If the bolt is locking back on the bolt itself and if you have marks on the deflector you may be over-gassed and the "lazy ejection" you see may be because you're seeing the result of the deflection. You say you tried a "new" buffer....what does this mean ? Have you tried an H2 or H3 ? On the tube rubbing... With the carrier out, look at the key for any marks. Put it back in with no bolt and see if you can feel any drag. Something else to experiment with is limiting the rearward travel of your BCG. You do this by placing fender washers of the correct O.D. in the bottom of the buffer tube (receiver extension). Make sure that your bolt can travel about 3/16" back of the bolt catch so that it can still function properly. If you have the BCG travel to do this, the mod can cause the brass to kick out before it's slapped against the deflector. |
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Screwing with the extractor is a waste of time. This sounds like it's over gassed and the cases are hitting the case deflector and bouncing forward.
Have you tried a H3 buffer? Heavy buffer from Slash? Springco blue spring and a H3 buffer, see what it does. Maybe add a FA carrier, that's a extra 11 grams. |
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