Re: How To Install BT17 Rail for Atlas Bipod in McM A5
So I did one post on a HS Precision 5R stock; here is another on a Manners T5 mini-chassis that came with two fore end swivel studs. Although flush cups would have been ideal, I picked up this chassis on the ready to ship section and avoided a 16 week wait; so, I found myself with swivel studs and the need to mount a rail.
The problem I encountered was that the 3.35" BT 15 rail would not fit with the front stud installed in the slot without the rail hanging over the forearm; so, off it went and in it's place I mounted one of the BT1517 screws. I test fit the atlas bipod several times to make sure that the screw placement would work and that the location on the stock was where I wanted it.
Next, I put a piece of tape between the stock and the rail on the spot I intended on drilling the pilot hole. I marked spot with a sharpie too:
After drilling a 1/4" pilot hole with cobra427's enclosed drill bit, I used the counter bore he provided:
I hope you can see, the spot was carefully chosen to provide a good location to put the rail, yet provide a good location to bore a new hole in the stock. I went very carefully at this point; can always take out more if necessary but no going back.
The drilled hole is in the middle, with the forward-most stud hole to the right:
After boring the hole, the 3/4" drill bit was used to open up the new hole to accept the BT1517 hardware hex screw. The rail was then installed and compressed with the T-nut screws. I don't bother with adhesive because (1) I do not believe it is in any way necessary, and (2) I want to have the ability to remount the second swivel stud if for some reason I would ever want to do so.
Here is a top view (front of stock is right):
Here is the rail (the remaining swivel stud is to the left, not shown in the photo):
Here is how it looks in action:
So I did one post on a HS Precision 5R stock; here is another on a Manners T5 mini-chassis that came with two fore end swivel studs. Although flush cups would have been ideal, I picked up this chassis on the ready to ship section and avoided a 16 week wait; so, I found myself with swivel studs and the need to mount a rail.
The problem I encountered was that the 3.35" BT 15 rail would not fit with the front stud installed in the slot without the rail hanging over the forearm; so, off it went and in it's place I mounted one of the BT1517 screws. I test fit the atlas bipod several times to make sure that the screw placement would work and that the location on the stock was where I wanted it.
Next, I put a piece of tape between the stock and the rail on the spot I intended on drilling the pilot hole. I marked spot with a sharpie too:
After drilling a 1/4" pilot hole with cobra427's enclosed drill bit, I used the counter bore he provided:
I hope you can see, the spot was carefully chosen to provide a good location to put the rail, yet provide a good location to bore a new hole in the stock. I went very carefully at this point; can always take out more if necessary but no going back.
The drilled hole is in the middle, with the forward-most stud hole to the right:
After boring the hole, the 3/4" drill bit was used to open up the new hole to accept the BT1517 hardware hex screw. The rail was then installed and compressed with the T-nut screws. I don't bother with adhesive because (1) I do not believe it is in any way necessary, and (2) I want to have the ability to remount the second swivel stud if for some reason I would ever want to do so.
Here is a top view (front of stock is right):
Here is the rail (the remaining swivel stud is to the left, not shown in the photo):
Here is how it looks in action:
