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Old 11-02-2013, 11:11 PM   #1 (permalink)
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KPMI bolt or pump?

Started working on this a week or so ago. Finally got it fitted in the stock. Trigger and action all function. The stock is from an I don't know what rifle, and the fore end is too long for the stock pump arm and handle.
I can:
1. shave off (a good bit) of the wood to fit the stock pump
2. order a new (longer) pump arm (but I'd need a fast changer in order to get the 12 gram out)
3. go with a bolt action. I've ordered a bolt off of eBay.
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Old 11-02-2013, 11:47 PM   #2 (permalink)
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Location: looking through the knotholes in granny's wooden leg

Try a little of both, longer pump rod/quick change knob and cut a little off the stock.
Thats what I did on this one.


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Old 11-03-2013, 01:57 AM   #3 (permalink)
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Where did you get the mounting bracket?
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Old 11-03-2013, 02:32 AM   #4 (permalink)
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Location: looking through the knotholes in granny's wooden leg

I made it with a dremmel
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Old 11-03-2013, 02:35 AM   #5 (permalink)
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Location: looking through the knotholes in granny's wooden leg

I am curious as to how you made your trigger.
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Old 11-03-2013, 09:32 AM   #6 (permalink)
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The entire trigger/sear assembly came with the stock. I don't know what kind of gun it was, but the sear lined up perfectly. I just had to add a BB to the trigger spring to make it strong enough to grab the hammer. Right now my trouble is getting it perfectly lined up every time I put it in the stock. I'd like to make a mount like you have so that I can be more precise with assembly.

You just used a block of brass and started grinding?
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Old 11-03-2013, 05:17 PM   #7 (permalink)
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Location: looking through the knotholes in granny's wooden leg

Well I already had the C9 trigger group and I wanted to use the same hole in the gun body that is for the stock grip frame, so I kinda had a idea of what shape I needed.
I went to the thrift store and found this:

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ending with this

[IMG][/IMG]

[IMG][/IMG]



The screw goes in the regular grip hole and the nut is soldered on to add more thread to the stock mounting part. It lines up with the hole in the stock for mounting it.

The cut out is to pinch the trigger assembly to the body


[IMG][/IMG]
[IMG][/IMG]

I have since sent that bracket and some money to someone to copy it in aluminum, they did a good job, and charged me $45 to make it. I inquired about the possibility to make more and the said they were not interested as it was a pain in the arss to make.
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Last edited by snaparen; 11-03-2013 at 05:22 PM.
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Old 11-03-2013, 08:56 PM   #8 (permalink)
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Brilliant. If I hadn't lucked out with a stock/trigger group that just happened to work, I might be miles behind where I am right now. I'm looking to make a mounting plate for the underside of the stock. The holes didn't line up and I hastily drilled a new one that I don't love. I'd like to sink a brass plate with into the wood so that it sits flush. That way I will have a secure and clean mounting point.
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Old 11-12-2013, 09:14 PM   #9 (permalink)
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Bolt and Pump almost finished

I ordered an extra long pump arm from MaD as well as a 12 gram fast changer to give me a little bit of an extension. The pump set up works great. It's a bit awkward to pump so close to the stock, but all in all it's pretty nice.

I also went ahead and bored out a hole in the back of a donor bolt for my bolt handle. I had to cut the original bolt handle to fit behind the gun body. It's secured with JB Weld, which I think I ought to paint to match the bolt and handle. It has a real satisfying feel when you cycle it bolt action. Next step will be to drill a new air port so that it can fire in the bolt down position. Almost done.


Bolt drilling done. Now fires from bolt down position. All that's left is some paint on the bolt, some touching up of the mounts, and perhaps a shaving of the stock. But it's done. KPMI for about 100 bucks.

PMI: 50
Stock: 22
Bolt: 7
Bolt handle: 5
Pump arm: 15
Fast changer: 7
Hardware: 2
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Old 11-12-2013, 09:38 PM   #10 (permalink)
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Location: looking through the knotholes in granny's wooden leg

I think you will find if you cut that slant off the front of the stock to where it is straight, it will feel better.
looks good!
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