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Posted: 3/23/2014 10:45:51 AM EDT
[#1]
Quoted:
I just took a brand new PWS Mk116 to the range yesterday, and noticed carbon venting from the front of the gas block. I know there is a hole in the gas tube closer to the receiver that is supposed to be for exhaust, but I find it strange that it's venting from the block itself. I shot less than 50 rounds of 55gr Independence ammo. Also, gas block was set to the first position. Rifle is bone stock other than an ambi safety select switch Here are some pictures http://i2.photobucket.com/albums/y46/monti84/photo2.jpg http://i2.photobucket.com/albums/y46/monti84/photo3.jpg http://i2.photobucket.com/albums/y46/monti84/photo4.jpg You need to call PWS right away and show them those pics. How did it cycle? |
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Posted: 3/23/2014 10:50:15 AM EDT
[#2]
Quote HistoryQuoted:
You need to call PWS right away and show them those pics. How did it cycle? Quote HistoryQuoted:
Quoted:
I just took a brand new PWS Mk116 to the range yesterday, and noticed carbon venting from the front of the gas block. I know there is a hole in the gas tube closer to the receiver that is supposed to be for exhaust, but I find it strange that it's venting from the block itself. I shot less than 50 rounds of 55gr Independence ammo. Also, gas block was set to the first position. Rifle is bone stock other than an ambi safety select switch Here are some pictures http://i2.photobucket.com/albums/y46/monti84/photo2.jpg http://i2.photobucket.com/albums/y46/monti84/photo3.jpg http://i2.photobucket.com/albums/y46/monti84/photo4.jpg You need to call PWS right away and show them those pics. How did it cycle? As soon as I noticed the carbon venting, I ceased firing immediately. I sent up a warranty support ticket yesterday and uploaded the pictures, still waiting to hear back. The only other PWS I've fired is my buddy's 14.5" that is one generation older. He did make some modifications to the spring and buffer, but I felt as if the report and recoil on my Mk116 was much more pronounced. The rifle cycled and operated just fine, other than that. |
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Posted: 3/23/2014 2:44:01 PM EDT
[#3]
looks like a split in the barrel.
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Posted: 3/23/2014 5:07:50 PM EDT
[#4]
I believe that part there is threaded onto the exterior of the barrel, it may just be loose. I just fired 3 brand new PWS this weekend and I went back and looked at all of them and none of them had this issue, I believe it is an anomaly. Definitely get in touch with them, I am sure they will make it right. When I went back and looked all of mine had thread showing on the muzzle side, maybe yours isn't tightened all the way? It is easy to get the handguards off, just an allen wrench and 4 screws and it is off. I don't know the specs as to how tight that part is supposed to be, but maybe call PWS and they can tell you, maybe spin it off, clean it up, and put it back on and torque it down. I know it sounds like a hassle on a brand new rifle but maybe saves the hassle of boxing it up and sending it back.
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Posted: 3/24/2014 3:22:52 PM EDT
[#5]
So the official word from PWS is that it is "lubricant and gas" leaking out of the gas block. They want me to clean my rifle and fire it again to see if I get the same result.
My concern(and I expressed this to them) is that there is no carbon being expelled from the gas exhaust port in the piston tube, it is all being expelled from the front of the gas block. Oh well, I'll give her a good scrub down tonight and I'll be out at the range again on Saturday to see what happens. |
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Posted: 3/25/2014 10:10:47 AM EDT
[#6]
The first time I have fired some of my PWS(s) I get an excesses amount of lube burn off (more so from a new upper than a complete gun).
One new upper was really "smokin" kind of funny but after all was burnt off it ran fine. However, i do not remember it looking like yours but it sounds like the gun is functioning properly so another shoot should see if it is OK. They will take care of any problem but why be without it if it is just burning off excess lube Wulfmann |
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Posted: 3/31/2014 7:19:04 PM EDT
[#7]
I ran a couple hundred more rounds through it on Saturday, and the thing is just fine. No more goop leaking from the gas block, and my support hand stayed pretty clean throughout. I think we can call this case closed; it must have just been excess lube burning off.
I will say that the bare keymod rail gets pretty damn hot pretty quick. I'll definitely be investing in some of those Noveske rail covers. Thanks for your replies! |
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Posted: 4/1/2014 4:38:35 AM EDT
[#8]
Does anyone have a picture of their rifle with the handguard removed? I'd like to see the piston system while still on the rifle.
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Posted: 4/2/2014 5:22:08 AM EDT
[#9]
Quote HistoryQuoted:
Does anyone have a picture of their rifle with the handguard removed? I'd like to see the piston system while still on the rifle. 
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Posted: 4/2/2014 7:33:18 AM EDT
[#10]
Quote HistoryQuote HistoryQuoted:
Quoted:
Does anyone have a picture of their rifle with the handguard removed? I'd like to see the piston system while still on the rifle. http://i30.photobucket.com/albums/c341/faawrenchbndr/PWS%20pistol/DSC02957.jpg http://i30.photobucket.com/albums/c341/faawrenchbndr/PWS%20pistol/DSC02955.jpg Thanks! I'm trying to decide between the 7.75" and 10.75". I will be adding the Saker suppressor which is rated down to 7.5" full-auto. What is that tiny spring in the second picture? |
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Posted: 4/2/2014 8:37:40 AM EDT
[#11]
Mine is a MK107 mod 1, 7.75" upper
That is the ball detent and spring for the gas selector. |
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Posted: 4/2/2014 8:50:56 AM EDT
[#12]
Quote HistoryQuoted:
Mine is a MK107 mod 1, 7.75" upper That is the ball detent and spring for the gas selector. Does the "piston head" detach from the piston rod for easy cleaning on the 7.75" like it does on the other lengths? How dirty does the inside of your receiver get? |
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Posted: 4/2/2014 9:26:03 AM EDT
[#13]
Yes,.....1/4 turn and piston is removed from the pushrod.
It does get a bit dirty, not any more than any other piston upper. Carbon in chamber or carbon in the rail. Easily removed with solvent. |
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Posted: 4/9/2014 7:59:25 AM EDT
[#14]
How does the gas selector get removed exactly? I've read through the Mod 1 user manual I found online, ( my mk116 didn't come with one). The reference card in the case showed how to adjust it, but nothing says how to remove it. All it said was service annually.
I know you use the sight tool-gas adjuster to remove the selector once its in the X position but that's it. Do you rotate to X, screw in the sight tool, and pull toward the muzzle? Anything else a guy needs to know? I am surprised that the Mod 1 manual doesn't give detail on this. |
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Posted: 4/9/2014 3:26:37 PM EDT
[#15]
Quote HistoryQuoted:
How does the gas selector get removed exactly? I've read through the Mod 1 user manual I found online, ( my mk116 didn't come with one). The reference card in the case showed how to adjust it, but nothing says how to remove it. All it said was service annually. I know you use the sight tool-gas adjuster to remove the selector once its in the X position but that's it. Do you rotate to X, screw in the sight tool, and pull toward the muzzle? Anything else a guy needs to know? I am surprised that the Mod 1 manual doesn't give detail on this. The gas knob adjustment tool threads into a standard cleaning rod and then threads into the front of the gas knob. I only take mine out once a year if that....it really is not necessary for maintenance of the firearm. Yes, a little bit of carbon builds up on it....but it's basically like an AK which you never really do a focused cleaning of that front portion of the gas tube/gas block on that rifle either. I recommend just cleaning the bore/chamber and piston tube from the rear with the chamber brush, boresnake and .40cal pistol brush (piston tube) and call it good. taking out the knob is a pain in the ass because the detent and spring will follow it out and getting those back in with the hand guard installed on the longer length models is next to impossible without removing the hand guard....if you really must do it, just leave it for once a year. Even PWS will tell you it is not a mandatory maintenance item. |
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Posted: 4/9/2014 5:13:17 PM EDT
[#16]
Quote HistoryQuoted:
The gas knob adjustment tool threads into a standard cleaning rod and then threads into the front of the gas knob. I only take mine out once a year if that....it really is not necessary for maintenance of the firearm. Yes, a little bit of carbon builds up on it....but it's basically like an AK which you never really do a focused cleaning of that front portion of the gas tube/gas block on that rifle either. I recommend just cleaning the bore/chamber and piston tube from the rear with the chamber brush, boresnake and .40cal pistol brush (piston tube) and call it good. taking out the knob is a pain in the ass because the detent and spring will follow it out and getting those back in with the hand guard installed on the longer length models is next to impossible without removing the hand guard....if you really must do it, just leave it for once a year. Even PWS will tell you it is not a mandatory maintenance item. Quote HistoryQuoted:
Quoted:
How does the gas selector get removed exactly? I've read through the Mod 1 user manual I found online, ( my mk116 didn't come with one). The reference card in the case showed how to adjust it, but nothing says how to remove it. All it said was service annually. I know you use the sight tool-gas adjuster to remove the selector once its in the X position but that's it. Do you rotate to X, screw in the sight tool, and pull toward the muzzle? Anything else a guy needs to know? I am surprised that the Mod 1 manual doesn't give detail on this. The gas knob adjustment tool threads into a standard cleaning rod and then threads into the front of the gas knob. I only take mine out once a year if that....it really is not necessary for maintenance of the firearm. Yes, a little bit of carbon builds up on it....but it's basically like an AK which you never really do a focused cleaning of that front portion of the gas tube/gas block on that rifle either. I recommend just cleaning the bore/chamber and piston tube from the rear with the chamber brush, boresnake and .40cal pistol brush (piston tube) and call it good. taking out the knob is a pain in the ass because the detent and spring will follow it out and getting those back in with the hand guard installed on the longer length models is next to impossible without removing the hand guard....if you really must do it, just leave it for once a year. Even PWS will tell you it is not a mandatory maintenance item. Thank you very much nekulturny. Exactly what I was looking for. I'm really digging this rifle. Was able to put hits consistently on a 14x16 gong at 355 yds in 20-30 mph cross wind a few days ago with tula 223. Accuracy is better than I thought it would be for being a piston system. |
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Posted: 4/9/2014 10:09:14 PM EDT
[#17]
Quote HistoryQuote HistoryQuoted:
Quoted:
Does anyone have a picture of their rifle with the handguard removed? I'd like to see the piston system while still on the rifle. http://i30.photobucket.com/albums/c341/faawrenchbndr/PWS%20pistol/DSC02957.jpg http://i30.photobucket.com/albums/c341/faawrenchbndr/PWS%20pistol/DSC02955.jpg Thanks those pics are oustanding 
How many positions on the gas adjustment, a bunch or just on - off - suppressed 
I'm really diggin that gas system 
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Posted: 4/10/2014 2:38:04 AM EDT
[#18]
Quote HistoryQuoted:
How many positions on the gas adjustment, a bunch or just on - off - suppressed........ Quote HistoryQuoted:
How many positions on the gas adjustment, a bunch or just on - off - suppressed........ Four fire positions and one setting to remove the plug/selector Position 1 is for normal operation with standard and some military ammunition.
Position 2 is for use with hotter loads such as military ammunition. Position 3 is for suppressed use when running standard ammunition. Position 4 is for suppressed use when running hotter loads. An “X” position allows for removal the gas plug for annual maintenance. |
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Posted: 4/10/2014 10:35:08 AM EDT
[#19]
Quote HistoryQuoted:
Four fire positions and one setting to remove the plug/selector Quote HistoryQuoted:
Quoted:
How many positions on the gas adjustment, a bunch or just on - off - suppressed........ Four fire positions and one setting to remove the plug/selector Position 1 is for normal operation with standard and some military ammunition.
Position 2 is for use with hotter loads such as military ammunition. Position 3 is for suppressed use when running standard ammunition. Position 4 is for suppressed use when running hotter loads. An “X” position allows for removal the gas plug for annual maintenance. Thanks Mucho
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Posted: 4/27/2014 7:15:31 PM EDT
[#20]
Hey faawrenchbndr!
Is it very hard to remove the hand-guard from the PWS? I looks like all there is six hex screws. I need to remove the hand-guard from my PWS to remove the gas plug because I did something incredibly stupid! Like a .22 caliber cleaning patch stuck in the gas tub / gas block area. 
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Posted: 4/28/2014 10:19:13 AM EDT
[#21]
Have you tried hooking it with a .22 cal bore brush and dragging it out or is it packed in there way too tight?
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Posted: 4/28/2014 1:01:09 PM EDT
[#22]
Quote HistoryQuoted:
Have you tried hooking it with a .22 cal bore brush and dragging it out or is it packed in there way too tight? Yes, it is packed in there way too tight now! What happened is I was cleaning my Primary Weapons Systems Upper Receiver when I inadvertently struck my cleaning rod with a .22 caliber cleaning patch into the gas tube. Well try as I may with a coat hanger, piece of hooked wire, etc. all I did was push this tiny .22 caliber cleaning patch farther and farther down the gas tube all the way to the gas plug. I attempted to loosen the gas plug to (hopefully) gain access to this astray cleaning patch. Well now the gas plug is struck between the gas tube and the opening (cutout) on the hand guard. I guess my real frustration is that now; because of a very simple and silly mistake, it is a big deal to correct this. I have to either attempt to remove the hand guard and then the gas plug (with no PWS factory manuals or guidance) by myself (hoping that I do not damage anything or lose the tiny indent and spring) or send this PWS upper receiver to PWS to repair (paying for this out-of-pocket). All of this because of some waded-up one-half cent .22 caliber cleaning patch! My bigger concern this that this should not be so. I, as an end-user in the field, should not be in this position! I should be able to remove the gas plug as one can on a host of other rifles; Ruger SR556, Adams Arms, LMT, etc., and fix is stupidly simple problem with having a whole weapons’ system down with the solution to perform a gunsmithing task at the depot or armor level! I have contacted PWS and I am awaiting their response.
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Posted: 4/28/2014 1:21:40 PM EDT
[#23]
Quote HistoryQuoted:
I, as an end-user in the field, should not be in this position! I should be able to remove the gas plug as one can on a host of other rifles; Ruger SR556, Adams Arms, LMT, etc., and fix is stupidly simple problem with having a whole weapons’ system down with the solution to perform a gunsmithing task at the depot or armor level! I have contacted PWS and I am awaiting their response. I agree 100%. This cleaning mistake should be considered likely and easily fixed in the field and if it is not PWS should update the system so it can be so and send those parts to each and every Mod 1 user. This, of course, assuming it is the problem. By that I mean perhaps there is a fix and it was a lack of explanation in the manual that should be updated. i too await to hear what PWS has to say about this. I am assuming you mistakenly got a 22 patch in the gas cylinder when cleaning the bore. I have worried about this and always use an AR bore guide to prevent me from making what seems like an easy to make mistake Wulfmann |
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Posted: 4/28/2014 2:10:18 PM EDT
[#24]
Quote HistoryQuoted:
Hey faawrenchbndr! Is it very hard to remove the hand-guard from the PWS? I looks like all there is six hex screws. I need to remove the hand-guard from my PWS to remove the gas plug because I did something incredibly stupid! Like a .22 caliber cleaning patch stuck in the gas tub / gas block area. Yes,.....remove the six screws and it comes off |
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Posted: 4/28/2014 2:12:25 PM EDT
[#25]
Never stick anything in the gas tube........
Try lube, might loosen it May end to push all the way through. Patches do not like to be reversed in a bore or in this case a gas tube. They kinda fold over themselves and get tighter. |
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Posted: 4/28/2014 5:35:53 PM EDT
[#26]
I just ordered the PWS MK110 upper. When it arrives could I just spray some gun degreaser like Bore Scrubber down the piston tube and into the piston chamber to get rid of any of that excess lube the original poster described?
Or would it be better to remove the handguard and put the gas selector to "X" and remove it and do a degrease that way? |
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Posted: 4/28/2014 5:43:18 PM EDT
[#27]
Quote HistoryQuoted:
I just ordered the PWS MK110 upper. When it arrives could I just spray some gun degreaser like Bore Scrubber down the piston tube and into the piston chamber to get rid of any of that excess lube the original poster described? Or would it be better to remove the handguard and put the gas selector to "X" and remove it and do a degrease that way? PWS puts out a cleaning kit( 130$).. In it is a 40 cal brass brush for the gas tube( You can probably use any 40 cal brass brush). I wouldn't try patches or lube in there. Just hit it with the brush. |
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Posted: 4/28/2014 5:51:58 PM EDT
[#28]
Quote HistoryQuoted:
PWS puts out a cleaning kit( 130$).. In it is a 40 cal brass brush for the gas tube( You can probably use any 40 cal brass brush). I wouldn't try patches or lube in there. Just hit it with the brush. Quote HistoryQuoted:
Quoted:
I just ordered the PWS MK110 upper. When it arrives could I just spray some gun degreaser like Bore Scrubber down the piston tube and into the piston chamber to get rid of any of that excess lube the original poster described? Or would it be better to remove the handguard and put the gas selector to "X" and remove it and do a degrease that way? PWS puts out a cleaning kit( 130$).. In it is a 40 cal brass brush for the gas tube( You can probably use any 40 cal brass brush). I wouldn't try patches or lube in there. Just hit it with the brush. I was just talking about taking spray degreaser and blowing out the excess lube that comes factory in the piston chamber like the original post pictures showed. |
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Posted: 4/28/2014 6:00:14 PM EDT
[#29]
Quote HistoryQuoted:
I was just talking about taking spray degreaser and blowing out the excess lube that comes factory in the piston chamber like the original post pictures showed. Quote HistoryQuoted:
Quoted:
Quoted:
I just ordered the PWS MK110 upper. When it arrives could I just spray some gun degreaser like Bore Scrubber down the piston tube and into the piston chamber to get rid of any of that excess lube the original poster described? Or would it be better to remove the handguard and put the gas selector to "X" and remove it and do a degrease that way? PWS puts out a cleaning kit( 130$).. In it is a 40 cal brass brush for the gas tube( You can probably use any 40 cal brass brush). I wouldn't try patches or lube in there. Just hit it with the brush. I was just talking about taking spray degreaser and blowing out the excess lube that comes factory in the piston chamber like the original post pictures showed. Mine didn't spray out like his did, I don't think all of them do that. I'd shoot it and see what happens. just my opinion |
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Posted: 4/28/2014 6:02:46 PM EDT
[#30]
Quote HistoryQuoted:
Mine didn't spray out like his did, I don't think all of them do that. I'd shoot it and see what happens. just my opinion Quote HistoryQuoted:
Quoted:
Quoted:
Quoted:
I just ordered the PWS MK110 upper. When it arrives could I just spray some gun degreaser like Bore Scrubber down the piston tube and into the piston chamber to get rid of any of that excess lube the original poster described? Or would it be better to remove the handguard and put the gas selector to "X" and remove it and do a degrease that way? PWS puts out a cleaning kit( 130$).. In it is a 40 cal brass brush for the gas tube( You can probably use any 40 cal brass brush). I wouldn't try patches or lube in there. Just hit it with the brush. I was just talking about taking spray degreaser and blowing out the excess lube that comes factory in the piston chamber like the original post pictures showed. Mine didn't spray out like his did, I don't think all of them do that. I'd shoot it and see what happens. just my opinion Yeah, sounds like his may just have been abnormal and had a little too much lube in that area. |
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Posted: 4/28/2014 6:13:09 PM EDT
[#31]
Quote HistoryYeah, sounds like his may just have been abnormal and had a little too much lube in that area. Their customer service and warranty department is outstanding,, I'm sure if you called them they would give you a heads up if you think it might happen. |
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Posted: 4/30/2014 5:33:38 PM EDT
[#32]
Have you tried sucking it out with a vacuum or turkey baster? Maybe a combination of both?
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Posted: 4/30/2014 7:22:38 PM EDT
[#33]
I've got a PWS 112 on my M16A1 lower and that thing runs really well. No break-in issues as poster described - probably north of 2,000 trouble free rounds down range now (they tend to go fast). I ended up with some Freedom Munitions ammo with bad primers where i was getting premature detonations, primers falling into the lower - honestly I'm surprised the upper didn't blow up but it's still rock solid. Probably the only complaint I have is that suppressed, even on the lowest gas setting I still think the upper is over-gassed a bit (and I also freak out that one day, I'm going to flip the block to X by mistake and watch the gas block fly down range when I pull the trigger)...
I've pulled the gas block plug out once (at 1,500 rounds) for cleaning. I just moved it to X, hit it from behind with a cleaning rod and it popped right out. I'm sure you know not to lubricant it. Also have pulled the front rail off - as described via 6 hex bolts. Honestly, it's been so trouble-free that PWS is probably 1 or 2 on my recommend list to shooters looking for a high quality upper. Service was really good as well when I had a question. Poster, hope things smooth out for you - think you'll ultimately be happy with the gun. |
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Posted: 5/1/2014 6:49:08 PM EDT
[#34]
I just got my MK114Mod1 upper, I will post after I get a chance to shoot it this Sunday. I am cleaning it tonight so I will take a look in there and see if there is any excess crap.
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Posted: 5/2/2014 1:22:06 PM EDT
[#35]
Quote HistoryQuoted:
I just got my MK114Mod1 upper, I will post after I get a chance to shoot it this Sunday. I am cleaning it tonight so I will take a look in there and see if there is any excess crap. do you plan on removing the gas valve? If you can please take some pictures. |
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