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Posted: 5/17/2014 6:36:32 PM EDT
Just scored this thing off GB for $345. Currently bidding on a Gen 4 G20 lower too. Have any of you guys converted a G21 KRISS extended mag for 10mm? I'm gonna have to source for glock mags soon too.

The Plan:
SBR this thing to 10"
Lightening the upper (maybe pay a 'smith to shorten the receiver?)
Add the monolithic rail
See if I can drill and tap the receiver to use my old SCAR 17 rails (I upgraded that to a 2" Branham extension)
Figure out a single-point sling arrangement?

This thing is going to be my Truck/GHB gun.

How'd I do for $345? The seller indicated maybe 300 rds went down the barrel...
http://www.gunbroker.com/Auction/ViewItem.aspx?Item=415523637











Link Posted: 5/17/2014 9:12:58 PM EDT
[#1]
I forgot about those. plain jane 359 from mechtech. Lots of charge for each add on.
Link Posted: 5/17/2014 11:14:04 PM EDT
[#2]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
I forgot about those. plain jane 359 from mechtech. Lots of charge for each add on.
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Yup, with the unit as its configured, I expect it would cost about $450 new + s/h, so I saved about $100. By the time I've modified it, I'll probably have another $300 into it (at least).
Link Posted: 5/18/2014 12:18:04 AM EDT
[#3]
In your list you forgot thread for can.
Link Posted: 5/18/2014 9:58:07 AM EDT
[#4]
I didn't have to modify the kriss mag extensions at all. I did radius the inside edge of the bottom of the G20 mag to match up with the inside edge of the extension.
Link Posted: 5/18/2014 1:18:34 PM EDT
[#5]
Just scored five OEM new gen4 G20 mags off GB for $20 each. Guy has 19 left if any of you guys need some. Overstock:
http://www.gunbroker.com/Auction/ViewItem.aspx?Item=417076329

Now just scored a Gen 4 G20 Frame for $165 + $10 s/h + $35 FFL xfer

So, I'm into this carbine for $575 and another $100 for 5 mags. Now when I get it I'll have to assess what to do next.
Link Posted: 7/14/2014 11:45:10 AM EDT
[#6]
Any updates in this? I have one in the mail and I'm interested to see what you've done.
Link Posted: 7/15/2014 12:47:51 AM EDT
[#7]
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Quoted:
Any updates in this? I have one in the mail and I'm interested to see what you've done.
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I have about 200 rds through it. Its tons of fun to shoot. Women really like shooting it with a reddot too. low recoil, big holes=win
Link Posted: 7/15/2014 5:11:27 PM EDT
[#8]
So if all you need is a G20 lower to go with the Mechtech 10mm, would a G21 work? Same frame, right?
Link Posted: 7/15/2014 6:03:18 PM EDT
[#9]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
So if all you need is a G20 lower to go with the Mechtech 10mm, would a G21 work? Same frame, right?
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Correct. Large frame lower for 45 or 10mm.
Link Posted: 7/19/2014 2:34:17 PM EDT
[#10]
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Quoted:



Correct. Large frame lower for 45 or 10mm.
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View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quoted:
So if all you need is a G20 lower to go with the Mechtech 10mm, would a G21 work? Same frame, right?



Correct. Large frame lower for 45 or 10mm.


That's how I made mine, bought a gen 4 lower g20/21 for $165 and the carbine upper for $350. The shipping a transfer jacked the price up
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