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Failure to Feed second to last round.

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bennypoo
DEVILDG03
ruegway
Keef the Thief
KevinAgar
Crankeye
aragorn1
hydepark308
s2kcrick
sniiped
USCSCJOHN
drowe26
mhemling33
jerryp
SoCal Gunner
gubi
jgianoli1
bluonyx
DUKnCVR
AZ2000
sullivanmedia
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Failure to Feed second to last round. - Page 2 Empty Re: Failure to Feed second to last round.

Post by s2kcrick Fri May 23, 2014 3:45 am

Add me to the list for this issue too. Same exact thing, second to last round using 10 round mags and Winchester whitebox. That stuff is really filthy isn't it??? I will use compatible ammo next time to see if whitebox was the problem. I should probably clean out the mags too as they are filthy.

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Post by hydepark308 Sat May 24, 2014 8:17 pm

Sorry if this has been mentioned before, but the internal geometry of the 10 round mags is very different than any of the others. The compliant 10 rounders rely on a narrowing body that blocks the actual follower from moving past a certain point. It's not like others that have stacked springs or removable blocks. I think this difference also adds friction. When the polymer on glock mags gets fouling on it, it gets kinda sticky. I bought a few around the time they passed the new mag laws here in Colorado. Got rid of them all shortly after and now I just have family from out of state ship me whatever I want. I'm not sure if this is relevant or not though because I never used them in the Kriss. My magex kits had problems at first but after leaving them loaded between a couple range visits they are flawless just like the various 13 rounders I have for my glock 21. Keep us posted on what you guys find out. I feel sorta guilty that mine doesn't have the same problems. I was curious to those of you having these issues, are your crb's or sdp's? Also I have found that steel cased stuff works great for me too but I use it less just because I think it might put more wear and tear on things.
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Post by bluonyx Sat May 24, 2014 9:29 pm

sullivanmedia wrote:Update.

After switching to frog lube and trying all the ammo they recommended. I did what I should have done in the first place! I called kriss they said send it back. It took them 2 months or less to get it back to me. Now I have only gone threw 50 rounds (just got the gun and went right to the range) but this thing is so much better then it was. They polished the ramp replaced some parts and replaced the mags. It's strange I don't really know the details of what they did but I can as it just feels better. The trigger, recoil and even cycling the gun all feel smother. I hope this all lasts, If it does my  my ar is going to be farthing a lot of dust.

So a big thank you to kriss for fixing this gun. I just wish it was like this when I got it new!

Could you take a pic of the polished ramp? Or anyone else for that matter? (SOLSCUD007)

I'd like to see how much of a difference a tuned, polished ramp looks from just my plain jane one. I'm getting close to 800 rds now and it's still a hit and miss on range trips.
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Post by hydepark308 Sat May 24, 2014 11:45 pm

After looking at mine, I realized it wasn't polished at all.  The pics show some glare, but there is no bare metal on the ramp itself, which leads me to believe it has not been polished.  And, I keep my Kriss pretty wet.  It does attract more grime, and takes longer to clean, but that's ok with me.  I either use Ballistol or Frog Lube (NO GREASE), and like I've mentioned elsewhere, mine runs just fine with every type of ammo I've used.  BUT, it's an SDP which is where I'm starting to see where more and more of the difference is.  Lots of guys here with SDP's and SBR's don't seem to have trouble, whereas the longer barrels do.  Not sure if that's accurate or even a factor, just throwing it out there.

Failure to Feed second to last round. - Page 2 Photo_13

Failure to Feed second to last round. - Page 2 Photo_14

Sorry, she's dirty.  What a bad person I am, I know.
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Post by bluonyx Sun May 25, 2014 3:24 pm

Here's a few pics of my CRB, looks like the sides could use some work on mine?

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Failure to Feed second to last round. - Page 2 20140525_102413_zps91e756a6
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Post by sullivanmedia Mon Jun 02, 2014 1:41 am

Talked with a rep from kriss today, at a gun show.

He knew the problem very well. I didn't want to give this up earlier but here it is. It the new single stacked mags from glock. The mags that where returned to me weren't the mags I sent in. They sent me riveted double stacked 10rd mags. Aparently glock changed the mag and didn't tell anyone. This problem took kriss by surprise and it took time to find the problem.

So now we know and so do they.

I can't say it enuf! If you have the problem send it back!

sullivanmedia

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Post by AZ2000 Tue Jun 03, 2014 11:09 am

I feel pretty good, I have one of the early models and the only problem I have had with it has been WWB, and it doesn't self clean it self after I shoot it? cheers
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Failure to Feed second to last round. - Page 2 Empty Riveted double stack mags

Post by aragorn1 Tue Aug 05, 2014 7:36 pm

So where would someone buy the "old" magazines? Still available?   I'm in canada and can't do much with my CRB except cross my fingers. ....GRRRRR. did I spend this much for a problem


Last edited by aragorn1 on Tue Aug 05, 2014 9:10 pm; edited 1 time in total
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Post by bluonyx Tue Aug 05, 2014 8:42 pm

I was coming to conclusion of a mag problem with mine. So I cleaned all 5 of them and installed new wolf springs also and a testing I went. 200 rds of Aguila ammo and not a single problem. Still wanted to try more so I purchased 50 rds of PMC and Remington at the ammo counter and had one FTF from each. Still a problem but much better than before.

Mine definitely likes Aguila ammo, so I'm sticking with that from now on.
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Failure to Feed second to last round. - Page 2 Empty Magazines

Post by aragorn1 Tue Aug 05, 2014 11:43 pm

I'll try that, cleaned up all my mags, stripped cleaned and lubed, will try this week. Thanks
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Failure to Feed second to last round. - Page 2 Empty Second last round

Post by aragorn1 Wed Aug 20, 2014 11:29 pm

Just thinking..... Has anyone tried this.....
My first two visits to range I did not have a speed loader, loaded rounds in mag and had no FTF issues. Come to think of it my problems started after I got a speed loader, the maglula. Has anyone been loading with a loader, had FTF issues, then try loading mag without the loader...... Still have issues?
Just been wondering if the loader is the cause of the problems, the way it stacks the ammo may be different than loading by hand. Haven't had any range time to try this out but...... Anyone else ?
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Post by Crankeye Wed Aug 20, 2014 11:35 pm

No change....tried it today with/with out speed loader. Results are always the same. FTF 2/3 from last round...if you have more than 5 rounds loaded. Anything less...its a crapshoot....but who wants a single shot Kriss?

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Post by aragorn1 Thu Aug 21, 2014 12:10 am

Shit..... Was hoping.
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Post by aragorn1 Thu Aug 21, 2014 12:12 am

With mine I can load up to 3, bang bang bang, any more than that and it's...... "Houston... We have a problem".
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Post by aragorn1 Thu Aug 28, 2014 1:34 pm

Heading to range today !   cleaned mags, oiled mags, "straightened" springs, cleaned gun thoroughly,  try loading magazine with and without loader.......fingers crossed Shocked Shocked Shocked
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Post by aragorn1 Thu Aug 28, 2014 11:56 pm

Well...... I cleaned the mags as noted above, after cleaning I put atleast a dozen drops of Hoppes gun lubricant inside the magazine, so it would run down the insides where the follower slides, six times I loaded up the magazine, no jams or fail to feeds. Need to visit range again and try this again.... seems there is hope, fingers crossed partytime
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Post by KevinAgar Fri Sep 05, 2014 3:47 pm

I posted this earlier as I found this problem isnt just a Kriss issue... I will try this out this weekend.

http://www.justrightcarbines.com/uploads/Glock_Magazine_Spring_Modification.pdf
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Post by KevinAgar Sun Sep 07, 2014 8:31 pm

Did a test and still got 3 bad #9 rounds out of 150. Oh we'll back to the drawing board.
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Post by aragorn1 Sun Sep 07, 2014 8:42 pm

My test included 3 mags, 2 worked perfect, one of them no. Re modified that one, will try it next time. Do you need to RE modify? Try more of an angle ?
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Post by aragorn1 Sun Sep 07, 2014 9:01 pm

Don't ya feel like kind of a fool....... Gotta wonder if the folks in Virginia or Switzerland read these forums. They KNOW what the issue is but are mum about it, reading these forums may be humorous to them, we pay big money to figure out a puzzle, try this , try that, may be it will work, maybe not. We get excited at a possible fix and then our hopes are dashed again with more failures. We look like fools to the powers that be......
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Post by KevinAgar Sun Sep 07, 2014 9:44 pm

If I were to bet $$$. I would say that the feed ramp in the gun is not generous enough and combined with a magazine that allows the 9th round to tilt upwards slightly when snapped up.... Bam. I did a test tonight and sure a shit the 9th round and 10th can both tilt up slightly at the nose.. Mainly the follower can tilt up. When there is more than 3 bullets in the mag the follower doesn't tilt upwards but 1 less and it does. When u have lots of bullets in the mag the top bullet is parallel to the top and to the rest of the bullets... When you only have 2 bullets in the mag it allows the follower to wiggle and the bullet and follower can nose up..... And that's my thoughts.
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Post by KevinAgar Sun Sep 07, 2014 9:57 pm

I put 10 rounds in 2 mags tonight and pushed out the bullets one by one..... First 8 bullets were tight and angled correctly and parallel to the top of the mag. As soon as I pushed out number 9 it was looser and angled up 10 degrees higher than the top at the nose end. I did the 6 or 7 times and 50% of the time it wasn't parallel! it was nosed up too high. Tells me that the follower is too loose when under lower spring tension due to less bullets and it allows the bullet to nose up.... Then jam up when loaded.
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Post by aragorn1 Sun Sep 07, 2014 10:00 pm

Makes sense, I've ordered new springs for my mags, not sure when they will arrive, this week hopefully. Another test !
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Post by KevinAgar Sun Sep 07, 2014 10:15 pm

Maybe that is why just right carbines suggested bending the spring to put the pressure on the back of the follower. Too bad that fix screws up locking/snapping in place the follower to the last coil. I also noticed that the follower allows the top coil to slide back n forth a bit. I might try gluing the spring coil all the way to the back of the follower on the underside to see if it puts more pressure on the back end so less nose up. Other than that... Load 10, fire 8, reload.
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Post by KevinAgar Sun Sep 07, 2014 10:19 pm

Problem really is that the follower is too loose and with 2 bullets in the mag it just can push the bullets up at the nose.... Sometimes hahahahaha
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