Author Topic: Fixing the Kral Silent Marine .22  (Read 3400 times)

oldpro

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Fixing the Kral Silent Marine .22
« on: February 20, 2017, 04:31:49 PM »
 I was really looking forward to getting my Kral Silent Marine bullpup as the price was astounding for the features and I liked the weight and size  plus it looked pretty nice in the pics I found online. So it showed up in this tiny box and i thought that cant be right but sure enough I opened it up and there she was in all her glory with 2 magazines and fill nipple and a single shot tray to boot. So I started looking her over and had to remind myself that it was a sub $500 gun as the finish was really not that great and in some areas plain bad. No problem I certainly could clean up those areas later. So I filled her up and started shooting WLL I dont know where they got the silent marine part from as it was quite loud 116Db on my meter and my ears were ringing(I hate loud guns) No problem I see theres room for improvement so off I went to hitting paper at 35 yards this is where I really got discouraged as all 5 pellets shot all over the place. Boy ow boy what did I get myself into? I noticed while putting in 4 mrod baffles(they fit perfectly) that the shroud had lots of play HHHHMMMMM.I tried getting the shroud off but couldnt get it to budge UNTIL I found the tiny set screw that holds it to stripper. I got the set screw out but couldnt remove shroud end cap as they used large amounts of lock tight. I heated end caps and finally got shroud off also I had to heat stripper to get it off also. So I have it all apart and can see why I couldnt hit anything they didnt put the oring in the end mount for LDC and I was clipping the end cap. I put in a new oring then put shroud in mill and shaved off some material from both ends to get shroud square then I turned shroud around so long end was now on other side of stripper and this let me put in 8 mrod baffles and spring and finally make the silent marine back yard friendly or just at 100Db(on my meter). I then shot it on paper and she just stacked them up.....Happy Happy 



oldpro

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Re: Fixing the Kral Silent Marine .22
« Reply #1 on: February 20, 2017, 04:37:19 PM »
All testing was done with power adjuster on high shooting 14.3 grain CPs at 930ish FPS.

Christopher

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Re: Fixing the Kral Silent Marine .22
« Reply #2 on: February 20, 2017, 04:51:36 PM »
WOW!! That's a pretty intense unboxing ;). Glad you got it shooting for ya.

Chris
  • dead end road KY

oldpro

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Re: Fixing the Kral Silent Marine .22
« Reply #3 on: February 20, 2017, 04:54:43 PM »
Still not overly excited about gun but for what I payed threw my dealer buy it was well worth putting in the work and getting to shoot well. Still have some other concerns but ill get to them shortly.

lee545

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Re: Fixing the Kral Silent Marine .22
« Reply #4 on: February 20, 2017, 08:23:57 PM »
I machined a new rear support cap and an air stripper. That alone made a HUGE difference. A couple more mods and it will be near marauder quiet.
I did the same thing for the Urban.





« Last Edit: February 26, 2017, 08:30:54 PM by lee545 »

oldpro

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Re: Fixing the Kral Silent Marine .22
« Reply #5 on: February 20, 2017, 10:08:35 PM »
I machined a new rear support cap and an air stripper. That alone made a HUGE difference. A couple more mods and it will be near marauder quiet.
I did the same thing for the Urban.






Nice work did you use baffles also?

oldpro

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Re: Fixing the Kral Silent Marine .22
« Reply #6 on: February 20, 2017, 10:09:30 PM »
 I think with a few mods it can easily become the best bang for the buck out there.

lee545

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Re: Fixing the Kral Silent Marine .22
« Reply #7 on: February 21, 2017, 09:49:21 AM »
I machined a new rear support cap and an air stripper. That alone made a HUGE difference. A couple more mods and it will be near marauder quiet.
I did the same thing for the Urban.





Thanks. The Kral, I tested it without any baffles. I am developing a new set that will maximize internal volume. I am waiting on materials to come it to remake the shroud from the ground up. The Urban has the standard cone affair. 


Nice work did you use baffles also?

lee545

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Re: Fixing the Kral Silent Marine .22
« Reply #8 on: February 21, 2017, 10:30:17 AM »
I think with a few mods it can easily become the best bang for the buck out there.

I noticed how absurdly Kral used thread locker compound. I was lucky that on mine, they did not use any on the barrel and air cylinder set screws. I am having trouble taking the tube apart to install a depinger. I wonder if they used thread locker on the tube as well?

oldpro

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Re: Fixing the Kral Silent Marine .22
« Reply #9 on: February 21, 2017, 10:34:41 AM »
Every part on mine had tons of very hard to remove green lock tight. Not fun to take apart at all.

lee545

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Re: Fixing the Kral Silent Marine .22
« Reply #10 on: February 21, 2017, 10:49:07 AM »
Every part on mine had tons of very hard to remove green lock tight. Not fun to take apart at all.

I wonder what possessed them to do so? I have never encounter a gun where they also used thread lock the air cylinder, if that be the case.  I destroyed the rear shroud mounting cap just trying to get that thing off.

oldpro

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Re: Fixing the Kral Silent Marine .22
« Reply #11 on: February 21, 2017, 11:33:45 AM »
Every part on mine had tons of very hard to remove green lock tight. Not fun to take apart at all.

I wonder what possessed them to do so? I have never encounter a gun where they also used thread lock the air cylinder, if that be the case.  I destroyed the rear shroud mounting cap just trying to get that thing off.
So did I and I ended up making a new one.

ncrary

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Re: Fixing the Kral Silent Marine .22
« Reply #12 on: February 21, 2017, 12:55:53 PM »
It appears this is not a gun for those of us without machine shop and skills.

Travis, you mentioned that with a few mods this could be the best bang for the buck.  Do you intend to mod and sell them?
  • Kennewick, Wa
Newell
US Navy - Retired

oldpro

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Re: Fixing the Kral Silent Marine .22
« Reply #13 on: February 21, 2017, 02:49:39 PM »
It appears this is not a gun for those of us without machine shop and skills.

Travis, you mentioned that with a few mods this could be the best bang for the buck.  Do you intend to mod and sell them?
I do!!! Infact I sold 2 today!

lee545

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Re: Fixing the Kral Silent Marine .22
« Reply #14 on: February 21, 2017, 06:12:21 PM »
What do you think about doing a carbon fiber tank conversion? I have seen small diameter tanks and 4500 psi to 2200 psi regulators available on the open market. I think only an adapter for the valve would have to be made.