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Posted: 5/29/2005 8:33:14 PM EDT
| Guys, im new to the board, ive been trooling on here for a while and jsut decided to post. I have a bushmaster with a 14.5" bbl. I have put around 5,000 rounds thru it and the last 500 rounds gave me alot of problems. It wont completly eject a shell and when it tries to lad the next round in it just jams. I found that the extractor spring was shot so i put a new extracor and spring in it but it did not fix it. It does not do it on every round. Some magazines do it 2 or 3 out or 30 rounds, and some magazines will cycle all 30 rounds. ANy idea on what to do? |
| Sounds like maybe a mag problem or you still have a weak extractor spring. Rule out the mags you are having trouble with and see if your problem persists. If so get you either a crane O ring ($1 from adco) or a d-fender (about $12) and your problem should be gone. My buddy has a 11.5" Bushy that had ejection problems like crazy. He got the O- ring and it works flawlessly now. Also you could try a Wolff extra power ejector spring. |
The defender is supposed to be a little better but the O ring works just fine it just wont last as long. I say a for a buck try the O ring and see if it cures your problem. I bet it will. |
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I was having a very similar problem, these are my previous posts maybe they will help find a solution for myself and the other gentleman : Hello all, Im new to the board and I had a question. Ive had my DSA ZM4 since december. Ive fired everything from crap plinking round to federal ammo out of it. Probably in the ball park of 1000 rnds. The last time I took it out though I was solely firing high grade ammunition (I cant remember the name at the moment) but I was getting an ejection problem every 10-20 rnds. As the bolt woudl cycle to the rear and pick up a new round it was catching the spent casing in between the new round and the top of the chamber with the bolt pinching everything forward. So now Im stuck with a new round dented and halfway into the chamber, and a spent casing stuck halfway out of the ejection port. At first I figured it was just the gas rings, but I inspected them and they were fine. The weapon was also very clean, as I clean it thouroughly after every shoot. Any idea on how to fix this problem. Im admitadly a bit concerned at having a realatively new rifle from a reputable company malfunctioning on me, now to mention the extra wear this has put on the weapon itself. It came with the D ring for the extractor aswell. I got finally had time to get the full cleaning of the weapon done today and I oticed there has been some physical damage to the weapon itself. The blueing has been worn away from the interior top side of the upper reciever where teh charging handle slides back and forth. Though this is normal it all occurred very quickly. The charging handle itself has some damage on the forward bottom tip just under the gass tube hole. The forward end of the ejection port has also been slighlt deformed from the malfunctions causing brass to slam into it. Im more than slightly worried that my fairly hefty investment in a firearm is being ruined here, and from all I can see for no apparent reason. I found nothign wrong with the bolt housing group or the entire upper reciever aside from the damaged caused by the malfunction. Fortunately I have a warranty with DSA but Im hesitant to return the weapon due to lack of knowledge of the cause of the malfunction. |
| Agreed, my only concern is that since I dont know what is causing the malfunction that perhaps its something Ive done. Im very familiar with this series of wepaons though and cant think of what it could have been. If I send it and they think it was my error then I am losing money when I could have simply taken it to a local armorer. Its essentially just concern over the unknown origin of the problem. Im being a bitch about it though so Ill shut up and just get it done. Question though: since Ill be mailing it out to them is it advisable to take it down to the local gun shop and have them aid me in the mailing (I have no idea what the rules and regs for mailing firearms are), or are the rules fairly simple to obtain and follow? |
| Hello! go to your local plumbing, auto, home, or whatever supply warehouse where you can find a "#006 VITON O-ring (about .35 ea.) they are just as tough and chemical resistant as the D-fender and do the same thing. Any time you have one empty case and one full round stuck in the ejection port trying to get into the chamber at the same time, it is almost always the extractor pressure, extractor, or VERY dirty chamber causing the problem. Spread the word, not a tough fix, and clean/polish your chambers once every couple thousand rounds. |
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