Airsoft Canada
Airsoft Depot

Go Back   Airsoft Canada > Discussion > Upgrades & Modifications
Home Forums Register Gallery FAQ Calendar
Retailers Community News/Info International Retailers IRC Today's Posts

DIY : KJW M4 GBB-R Magpul PTS PRS installation

:

Upgrades & Modifications

Reply
 
Thread Tools
Old August 13th, 2012, 20:00   #1
audi_bhoy
 
Join Date: Mar 2009
Location: Trois-Rivières
DIY : KJW M4 GBB-R Magpul PTS PRS installation

Hey guys, since the MAGPUL PTS PRS stock is not a bolt-on upgrade to KJW, i decided to get myself a used AEG stock in the classifieds and did a quick
DIY for those who could be interessed in this stock. Please note I had the AEG version.

I work as a machinist and have plenty of tools and machines available, but I wanted to do this mod so the common airsoft player could attempt this mod so it is pretty simple and does not require a lot of specialized tools. A minimum of handyness is still required though .


Tools required:
- Center punch
- #7 drill (1/4-20UNC pre-drill size)
- 5/16" drill
- 1/4-20UNC Tap
- Benchgrinder (hand grinder could do the job too)
- Round file
- 1/4-20UNC 3 1/2" long bolt
- 1" copper tube (1" inside and 1 1/8" outside)

Step 0: Remove the KJW buffer tube, and take the KJW brass tube appart as well.

Step 1: Punch, Drill and Tap the 1/4-20UNC hole in the black nut that sits at the end of the KJW brass tube.
I drilled and tapped the nut from the inside, since it was easier to center punch and drill/tap on a flat surface.
Make sure to drill straight otherwise the bolt will not fit properly.

Step 2: Install the black nut on the KJW brass tube, and benchgrind the black nut to fit the brass tube's diameter.

Step 3: Cut the 1" copper tube to 9 1/4" length and file the edges so it slides onto the KJW brass tube.
P.S. Cut to 9 1/8" if you plan on using some sort of washer to hide the copper tube between the stock and the KJW lower body.

Step 4: Sand the KJW brass tube so the 1" copper tube can slide on.


Step 5: Bore the MAGPUL Stock's hole to allow the 1/4" bolt to get through freely.

Step 6: Install the copper tube, and then the magpul PTS PRS stock and secure with the 3 1/2" bolt that fits into the KJW brass tube's nut.



Last edited by audi_bhoy; August 13th, 2012 at 23:10..
audi_bhoy is offline   Reply With Quote
Old August 13th, 2012, 23:45   #2
jordan7831
will always be Mike Litoris in our hearts
 
jordan7831's Avatar
 
Join Date: Jul 2004
Location: North York - Toronto
Cool mod. Thanks for sharing.
jordan7831 is offline   Reply With Quote
ReplyTop


Go Back   Airsoft Canada > Discussion > Upgrades & Modifications

Bookmarks

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Airsoft Canada
Airsoft Depot

All times are GMT -4. The time now is 10:21.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.