Special Ops Paintball: A5 top rail - Special Ops Paintball

Jump to content


Page 1 of 1
  • You cannot start a new topic
  • You cannot reply to this topic

A5 top rail How to build a permanent 7/8" rail on your A5 Rate Topic: -----

#1 User is offline   Lt.Col.Vortex 

  • Death itself
  • PipPipPip
  • Group: Members
  • Posts: 288
  • Joined: 25-November 10
  • Gender:Male
  • Location:South east Georgia

Posted 17 December 2010 - 04:54 PM

This is going out to Shipwreck, who asked me to do a "how to" on this.



WARNING: This is a "cut in mod". Meaning that this is a gun frame mod that will require you to permanently change the design and look of your marker.

Materials needed:

A measuring device that measures in MM.

Scotch tape.

A 5mm round chainsaw file( I think that most are 5mm). 2 files are recommended as they are some what brittle and will wear quickly, but 1 is fine.

A hack saw with a fine tooth blade. preferable one that is used to cut metal.

NOTE: The internals should be removed to prevent shavings from entering the marker, and the marker will have to be reassembled and worked on int one piece to prevent unevenness.


You will first need to tape off the top of the 7/8" rail on your A5. The TOP rail is the 3/8" rail. These rails are called dove tail rails due to there shape. Taping the TOP of the 7/8" rail will prevent the file from doing too much damage to the rail.

Next you will need to measure out your rails. The rails are 5.23MM wide and 10.o1 MM from center to center. But for this build, 5 and 10MM will do fine. I have had no problems so far with mine. This is a site that has the measurements, http://en.wikipedia..../Picatinny_rail You will need to measure out from one of the edges of the rail to start with. I chose the back of the top rail and it ended up within 1MM of the other edge of being even. So you will not need try and figure out center. Measure out 10MM from the edge and mark with a marking device. Continue with this until you reach the other end.

Once you have measured and marked the top of the 3/8" rail, you will need to be VERY careful and cut a small indentation with the hack saw. This is the point of no return. This cut will help guide your file so it doesn't weaver from the mark. Make sure that the cut is strait to prevent wondering.

Next its time to file in the rail. Simply start slow and use full strokes when filing. This will keep the file strait and prevent the life of your file. File until you get close to the tape. Then next file slowly down to prevent scratching the tape off and marking up the top of the 7/8" rail. Continue down the line until you are done. Try and keep the file 90 degrees to the gun at all times. This will prevent the groove from becoming greater than 5MM.

Once you are done, clean the shavings off and repaint the exposed metal. I recommend taping off like you did for the filing so only the grooves get painted.

And that's it!! This will allow you to mount 7/8" picatinny mounts to your A5 without putting on a riser or after market parts.

This post has been edited by Lt.Col.Vortex: 03 September 2011 - 11:45 AM

0

#2 User is offline   Lt.Col.Vortex 

  • Death itself
  • PipPipPip
  • Group: Members
  • Posts: 288
  • Joined: 25-November 10
  • Gender:Male
  • Location:South east Georgia

Posted 23 January 2011 - 08:23 PM

OK, guys, sorry for the long delay on posting pictures. I finally got time( rather I remembered to) post them.

First picture is the A5 in a vice. I have all the internals out and the screws in.

Second is the rail taped off.

Attached File(s)


0

#3 User is offline   Lt.Col.Vortex 

  • Death itself
  • PipPipPip
  • Group: Members
  • Posts: 288
  • Joined: 25-November 10
  • Gender:Male
  • Location:South east Georgia

Posted 23 January 2011 - 08:26 PM

Hear is the rail marked out every 10 mm.


Notice that teh whole rail is just under 12mm( only by 2 mm), so I space out the first mark 1 mm back. This will make the rails more even.( Note: your gun might be a bit different in length).

Attached File(s)


0

#4 User is offline   Lt.Col.Vortex 

  • Death itself
  • PipPipPip
  • Group: Members
  • Posts: 288
  • Joined: 25-November 10
  • Gender:Male
  • Location:South east Georgia

Posted 23 January 2011 - 08:28 PM

Marking the rail for the file and filing out the groves...

Attached File(s)


0

#5 User is offline   Lt.Col.Vortex 

  • Death itself
  • PipPipPip
  • Group: Members
  • Posts: 288
  • Joined: 25-November 10
  • Gender:Male
  • Location:South east Georgia

Posted 23 January 2011 - 08:29 PM

Finished product

If you notice, not all the groves are filed out to the exact same distance apart. This is due to file wondering. This will not affect the mounting in the least.

Attached File(s)


This post has been edited by Lt.Col.Vortex: 14 September 2011 - 11:37 AM

0

#6 User is offline   Lt.Col.Vortex 

  • Death itself
  • PipPipPip
  • Group: Members
  • Posts: 288
  • Joined: 25-November 10
  • Gender:Male
  • Location:South east Georgia

Posted 23 January 2011 - 08:32 PM

If you notice, I nicked the 7/8" rail with the round file, this is OK, no one is perfect and as long as you pay attention to your work, these nicks will be fine. However, if you do happen to have a triangle file, you can fix some of them if you wish.

Attached File(s)


This post has been edited by Lt.Col.Vortex: 14 September 2011 - 11:42 AM

0

Share this topic:


Page 1 of 1
  • You cannot start a new topic
  • You cannot reply to this topic

2 User(s) are reading this topic
0 members, 2 guests, 0 anonymous users