Jump to content


Photo
- - - - -

Trials and Tribulations of the MKA 1919 "XN" Model


  • Please log in to reply
10 replies to this topic

#1 snwbrdrcr

snwbrdrcr

    Member

  • Member
  • Pip
  • 68 posts
  • Gender:Male
  • Location:Washington State

Posted 28 January 2013 - 03:01 AM

I figured I should start a separate topic regarding my MKA , due to the fact it's a "XN" model (and therefore has a different drive block)

 

Finally Done!

mka1919008edited_zps9176f5a0.jpg

MKA 1919 'XN' model 
Specs 
Tooth and Nail: 
Charger Hand Guard 
Drive Block (Had to do quite a bit of hand fitting to get the 'XN' actuation arms to fit) 
Salem 6: 
M4 Stock Adapter 
Spring 
10 round Mag Kit 
Firebird: 
Big Button Mag Release 
Hammer and Spring 
Tromix: 
Piston 
Trigger, Disconnector and Spring 
VLTOR: 
A5 Mil-spec buffer tube (Shotgun specific model -extra heavy duty with watertight compartment accessible from the rear) 
MagPul: 
CTR Stock 
"Shotgun" Butt-pad 
AFG2 
Troy: 
Fixed HK style Front Sight 
Fold-able Battesight Rear 
Gear Sector: 
Quick Disconnect Rail Sling Attachment

 

 

Drive Block Comparison (before and after hand fitting)

Stock on the left, Tooth and Nail improved version on the right.

mka1919013edited_zpsb37b93e5.jpg

Another view with actuation arm.

mka1919019edited_zps6704e036.jpg

After about 2 hours of 'careful' hand fitting. (Do not attempt if you are not mechanically inclined or have much gunsmithing experience. ( I work on several precision rifles and custom ARs every year and specialize in Springfield XD trigger work!)

mka1919022edited_zps7582d531.jpg



#2 toothandnail

toothandnail

    Executive Member

  • Contributor
  • PipPipPip
  • 746 posts
  • Gender:Male
  • Location:Versailles Mo

Posted 28 January 2013 - 08:01 AM

Thanks for the pics, hope our next ones that come in are the XN version.

 

Those arms look quite a bit wider. and the connector plate between the two is thicker.



#3 Flatland Shooter

Flatland Shooter

    Advanced Member

  • Member
  • PipPip
  • 249 posts
  • Gender:Male
  • Location:Conroe, Texas

Posted 28 January 2013 - 02:22 PM

Thanks for the pics, hope our next ones that come in are the XN version.

 

Those arms look quite a bit wider. and the connector plate between the two is thicker.

 

Will the new "XN" version drive block fit the pre-"XN" guns or will there be two style blocks to choose from?

 

Thanks.

 

Bill



#4 eod1

eod1

    Member

  • Member
  • Pip
  • 26 posts
  • Gender:Male
  • Location:Out on the plains

Posted 28 January 2013 - 08:24 PM

I hope the new version doesn't crack like the old one. Interesting that they just milled it father down so that the material that cracks is gone. I'm on my fourth drive block since August, I'm gonna try yours this time toothandnail. Snwbrdrcr putting the tana drive block on the new xn change the angle of the actuation arm into the upper reciever?


Edited by eod1, 28 January 2013 - 08:30 PM.


#5 toothandnail

toothandnail

    Executive Member

  • Contributor
  • PipPipPip
  • 746 posts
  • Gender:Male
  • Location:Versailles Mo

Posted 28 January 2013 - 08:57 PM

Thanks for the pics, hope our next ones that come in are the XN version.

 

Those arms look quite a bit wider. and the connector plate between the two is thicker.

 

Will the new "XN" version drive block fit the pre-"XN" guns or will there be two style blocks to choose from?

 

Thanks.

 

Bill

 

 

Looks like we may have to have two versions , but we will need to see the XN model first , to be sure



#6 snwbrdrcr

snwbrdrcr

    Member

  • Member
  • Pip
  • 68 posts
  • Gender:Male
  • Location:Washington State

Posted 28 January 2013 - 11:35 PM

It didn't appear to change the angle on mine. That was a concern of mine while doing the fitting, I guess time will tell of there is any problems.

#7 Haycock

Haycock

    Advanced Member

  • Member
  • PipPip
  • 108 posts
  • Gender:Male
  • Location:california

Posted 29 January 2013 - 10:27 AM

do you have your stock cut at a slight angle? i think i like it sloped down a hair like it looks in the pic. i think thats my favorite looking mka so for...



#8 snwbrdrcr

snwbrdrcr

    Member

  • Member
  • Pip
  • 68 posts
  • Gender:Male
  • Location:Washington State

Posted 29 January 2013 - 03:40 PM

Thanks for the compliments, I styled it after my ARs I have built in the past. I'm a fan of customizable slick sided handguards like Troy Industries so I felt Tooth and Nails design fit the bill. A side charger option was definitely a must.
As for the stock, I utilized the surface between the lower and upper receiver so any downward angle of the stock was unintentional. I squared everything up when making the cut and cleaned it up by filing it and finishing it with a sanding block mounted in a vise.

#9 toothandnail

toothandnail

    Executive Member

  • Contributor
  • PipPipPip
  • 746 posts
  • Gender:Male
  • Location:Versailles Mo

Posted 29 January 2013 - 06:20 PM

We have an XN model on the way, we'll take some measurements, do the cad drawing, and run some on the CNC mill to see how they fit.

 

Should have a workable design by the end of next week. I doubt we can do a one size fits all, we'll have to see.

 

Hopefully we will have our anodizing line up and going before then, then be able to crank some out.



#10 timmmyy

timmmyy

    Member

  • Contributor
  • Pip
  • 64 posts
  • Gender:Male
  • Location:ga.

Posted 03 February 2013 - 08:17 AM

snwbrdrcr Gun looks sweet , were  can i buy the vltor milspec buffer tube ? what is the model #

#11 snwbrdrcr

snwbrdrcr

    Member

  • Member
  • Pip
  • 68 posts
  • Gender:Male
  • Location:Washington State

Posted 03 February 2013 - 12:23 PM

I purchased mine from SKD, but they may be out.
Here's the direct link for VLTOR's site:

http://www.vltorstor...-Extension.html

Edited by snwbrdrcr, 03 February 2013 - 12:25 PM.





0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users