I am wondering if anyone has any ideas on why my Sass is doing this. I took the gun to the range for the first time yesterday and after about 30 rounds I had a failure to eject. The spent casing was extracted from the chamber but was not ejected causing the next round to jam. This was happening about one in ten shots. I tried different ammo, and mags but same problem. When I got home and stripped the bolt I noticed a lot of grease between the bolt and bolt carrier. No damage was found on the extractor, and the ejector and bolt face was really cruddy. I gave everything a good cleaning, removed the grease and added oil, cleaned the extractor, cleaned bolt face and ejector, and tested the ejector for function. Seems to be okay. Any other ideas? Other than the failure to eject the gun is great, plenty accurate for me.
DPMS Sass failure to eject first range trip
- Thread starter Mauser9w9
- Start date
Re: DPMS Sass failure to eject first range trip
Sned,
You probably fixed the issue. If the BCG is going back far enough to strip another round off of the magazine, but the extractor doesn't have enough strength to eject the spent cartridge it sounds like there was a mechanical issue that was limiting the range of motion or spring force of the extractor.
Sned,
You probably fixed the issue. If the BCG is going back far enough to strip another round off of the magazine, but the extractor doesn't have enough strength to eject the spent cartridge it sounds like there was a mechanical issue that was limiting the range of motion or spring force of the extractor.
Re: DPMS Sass failure to eject first range trip
You are supposed to clean a new rifle before you fire it. Grease attracts and holds dirt etc.......... If you sent shit bullets down the barrel you can imagine some getting caught in that grease and stinking things up for you. Lube the thing with CLP not grease. Seems like you are shooting quite a few rounds for one outing so I would recommend a lot of CLP on your carrier.
You are supposed to clean a new rifle before you fire it. Grease attracts and holds dirt etc.......... If you sent shit bullets down the barrel you can imagine some getting caught in that grease and stinking things up for you. Lube the thing with CLP not grease. Seems like you are shooting quite a few rounds for one outing so I would recommend a lot of CLP on your carrier.
Re: DPMS Sass failure to eject first range trip
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Hi Speed</div><div class="ubbcode-body">What kind of ammo were you using. </div></div>
I was using 150gr UMC and Winchester
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Hi Speed</div><div class="ubbcode-body">What kind of ammo were you using. </div></div>
I was using 150gr UMC and Winchester
Re: DPMS Sass failure to eject first range trip
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Hi Speed</div><div class="ubbcode-body">You are supposed to clean a new rifle before you fire it. Grease attracts and holds dirt etc.......... If you sent shit bullets down the barrel you can imagine some getting caught in that grease and stinking things up for you. Lube the thing with CLP not grease. Seems like you are shooting quite a few rounds for one outing so I would recommend a lot of CLP on your carrier. </div></div>
Yes it was very greasy, I probably didn't clean it well enough before shooting. I am hoping that was the problem.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Hi Speed</div><div class="ubbcode-body">You are supposed to clean a new rifle before you fire it. Grease attracts and holds dirt etc.......... If you sent shit bullets down the barrel you can imagine some getting caught in that grease and stinking things up for you. Lube the thing with CLP not grease. Seems like you are shooting quite a few rounds for one outing so I would recommend a lot of CLP on your carrier. </div></div>
Yes it was very greasy, I probably didn't clean it well enough before shooting. I am hoping that was the problem.
Re: DPMS Sass failure to eject first range trip
Sned,
Not to beat a dead horse but Hi speed hit the nail on the head.
CLP or miltech are the only pruducts that I use for my guns. I see you are located in PA. When it gets cold there any old oil may freeze up and casue more mechanical issues. When I clean my SA platfroms I use carbarator cleaner or gun scrub (same stuff) from the local auto store and get the operating surfaces as clean as possible, then add a good layer of miltech. Most folks do not put enough lube on their ARs. In the future you sould clean any gun that you buy prior to shooting it, new or used.
Sned,
Not to beat a dead horse but Hi speed hit the nail on the head.
CLP or miltech are the only pruducts that I use for my guns. I see you are located in PA. When it gets cold there any old oil may freeze up and casue more mechanical issues. When I clean my SA platfroms I use carbarator cleaner or gun scrub (same stuff) from the local auto store and get the operating surfaces as clean as possible, then add a good layer of miltech. Most folks do not put enough lube on their ARs. In the future you sould clean any gun that you buy prior to shooting it, new or used.
Re: DPMS Sass failure to eject first range trip
What are some of the key areas that you guys lube?
What are some of the key areas that you guys lube?
Re: DPMS Sass failure to eject first range trip
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Snedtech</div><div class="ubbcode-body">What are some of the key areas that you guys lube? </div></div>
Bolt, bolt carrier, if you don't remove the bolt from carrier then put a little in the cam pin hole. Don't get any on the bolt face. Any synthetic grease or oil should work I usually use tetra for my 308's and bolt guns CLP for 223.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Snedtech</div><div class="ubbcode-body">What are some of the key areas that you guys lube? </div></div>
Bolt, bolt carrier, if you don't remove the bolt from carrier then put a little in the cam pin hole. Don't get any on the bolt face. Any synthetic grease or oil should work I usually use tetra for my 308's and bolt guns CLP for 223.
Re: DPMS Sass failure to eject first range trip
i usually put a pretty good layer on the BCG and a little extra on the parts that articulate bolt, firing pin, bolt locking pin area, extractor, charging handle and trigger mechanizm.
For my work gun (M-4) we had CLP in a squirt bottle and I would give it a couple heavy shots.
i usually put a pretty good layer on the BCG and a little extra on the parts that articulate bolt, firing pin, bolt locking pin area, extractor, charging handle and trigger mechanizm.
For my work gun (M-4) we had CLP in a squirt bottle and I would give it a couple heavy shots.
Re: DPMS Sass failure to eject first range trip
i agree with above, also if you have an adjustable gas block open it up a little your gass system may be the problem i don't know about the sass if it comes with one
i agree with above, also if you have an adjustable gas block open it up a little your gass system may be the problem i don't know about the sass if it comes with one
Re: DPMS Sass failure to eject first range trip
Trust this. A gun used for accuracy and precision should not be heavily oiled or fired 30 plus rounds in a minute or Etc....... A pdw plinker combat rifle, things that are shot like yours, need lube on the BCG everywhere but the bolt face to insure proper function. I have fired over 400 rounds in 5 minutes before and never once a hiccup. This was due to a liberal saturation of CLP before the firefight started. Combat proven advice.
Trust this. A gun used for accuracy and precision should not be heavily oiled or fired 30 plus rounds in a minute or Etc....... A pdw plinker combat rifle, things that are shot like yours, need lube on the BCG everywhere but the bolt face to insure proper function. I have fired over 400 rounds in 5 minutes before and never once a hiccup. This was due to a liberal saturation of CLP before the firefight started. Combat proven advice.
Re: DPMS Sass failure to eject first range trip
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ssatt68</div><div class="ubbcode-body">Sned,
Not to beat a dead horse but Hi speed hit the nail on the head.
CLP or miltech are the only pruducts that I use for my guns. I see you are located in PA. When it gets cold there any old oil may freeze up and casue more mechanical issues. When I clean my SA platfroms I use carbarator cleaner or gun scrub (same stuff) from the local auto store and get the operating surfaces as clean as possible, then add a good layer of miltech. Most folks do not put enough lube on their ARs. In the future you sould clean any gun that you buy prior to shooting it, new or used. </div></div>
Good advice.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ssatt68</div><div class="ubbcode-body">Sned,
Not to beat a dead horse but Hi speed hit the nail on the head.
CLP or miltech are the only pruducts that I use for my guns. I see you are located in PA. When it gets cold there any old oil may freeze up and casue more mechanical issues. When I clean my SA platfroms I use carbarator cleaner or gun scrub (same stuff) from the local auto store and get the operating surfaces as clean as possible, then add a good layer of miltech. Most folks do not put enough lube on their ARs. In the future you sould clean any gun that you buy prior to shooting it, new or used. </div></div>
Good advice.
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