Air Gun Home :: View topic

ZipSnipe · Veteran Member

Well I was so happy with my first 1077 tactical mod I decided the 1077 bullpup mod should be next.

So I am going for this look

Uploaded with ImageShack.us

Here are two slabs of white or red oak being laminated together

Here I used the old 1077 stock to draw out the cut out for all the innards

And here I have rough drawn the bullpup cut out. You want to gut out the innards at this point while the piece is nice and squared out.

Uploaded with ImageShack.us

The ammo clip is there to make sure I have drawn out enough room to load and unload.

There are two major design factors

1) the forward trigger, thanx to another member Uncle Jack and his bullpup design I was able to copy his trigger method. I will be using rivets and Harbor frieght has one for like 5 bucks plus rivets. This will be tricky as we have to go around the ammo clip and still keep the mechanism hidden inside the stock.

2) next hurdle will be the co2 tube needs to be lengthened by about 7 1/2". My thought is to cut the tube in half and turn an 7 1/2" insert tube between them two pieces that saves on milling and threading.

This project is also going to take me awhile as I cannot spend a dime until I help the wife and kid get to the Philippines to see her family in May.

But I can gut out the stock and get it roughed out

More to come....

ZipSnipe · Veteran Member

Well gutted out most of the stock

Uploaded with ImageShack.us

Keyslot cutter to cut out inside groove for forward trigger linkage

Uploaded with ImageShack.us

An old spade bit shaped into a round spade bit to groove out the co2 tube slot

Uploaded with ImageShack.us

more to come

robert w · Senior Member

real nice work on that stock so far

AirGunEric · Site Admin

How do you access/remove the magazine holder once the stock is installed?

ZipSnipe · Veteran Member

There will be a cutout for the magazine holder, if you look up at the first post , you will see a pic where I have the magazine laying on the stock, I drew out the stock to make sure that I left enough room to remove the magazine.

garththomas · Veteran Member

That is a good looking stock, when I first saw it I was inspired and decided to make a new one as well for my QB57. I glued up a block of Baltic Birch and hope to start carving out for the reciever tomorrow. Hope it goes as well as yours.

ZipSnipe · Veteran Member

It's funny I am looking at the picture with key slot cutter and then I realize that I cannot do the linkage unless I cut the top of the stock off and make the top a cap.

This will allow the trigger linkage to be dropped in. I was hoping to keep it all one piece.

The design calls for the linkage to be connected to the 1077 and then it can be lowered into stock. I kept thinking I could connect it to the trigger while it was in the stock ...WRONG!!

So to add a flavor to the stock design since I need to put some type of cap over the rear part of it, I will slice about a half inch off the bottom and top of the stock and use a couple of pieces of scrap mahogany for a two tone look.

ZipSnipe · Veteran Member

Trigger and a spare, I polished the one, put some light oil on a buffing pad and it gives it a nickle look. Need to tap 2 small holes in each trigger. There will also be a brass dovetailed piece on top of it. Decided to make a a new barrel band that will house the forward trigger, will start on that tonite.

Uploaded with ImageShack.us

ZipSnipe · Veteran Member

Well got the one barrel band done with integrated trigger. The other band is gonna need more work.

I also screwed up as far as where the two holes are for the barrel they should have been down another 3/16" to give me room for a dovetailed top but Oh well, I'll just get the barrel clamp mounts for the red dot scope.

Uploaded with ImageShack.us

ZipSnipe · Veteran Member

Well finished the linkage for now. I might add a spring to it but that would probably be on the inside of the stock. I am currently awaiting more cash to come in so I can purchase another 1077. I am also awaiting the extra c02 tube I ordered from Crosman they are a lil slow.

The second pic shows a difficult trianglur piece I had to make. I originally tried to do the triangle piece all the way to the round piece in one whole piece of aluminum but I failed :-( . So I fashioned that triangular piece with 6 tapped 6-32 holes. Total time in the linkage is around 20 hours.

I also made a duplicate of the linkage which I will sell. It will be rough and not polished to keep the cost down, who ever buys it can polish it up and I might leave the holes un tapped on the second one again to keep cost down.

Uploaded with ImageShack.us

Uploaded with ImageShack.us

More to come...

robert w · Senior Member

i think you need to just start manufacturing guns from the start. that is some fine work so far ,cant wait to see the finished gun

ZipSnipe · Veteran Member

I would love to come up with the ideas and then have a real machinist come in and manufacture the guns.

I am only good to within .005. But I used to work with guys that would get stuff dead on all the time, in fact I would just about have a heart attack if I got anything dead on!!!

But thanx for the compliment Robert.

I had to finish this linkage before I could go any further on the stock, I need to have it mounted on the 1077 and then I can finish out the stock. So maybe next week I will pony up some mullah to pick up another 1077!!

garththomas · Veteran Member

Just wondering about carving the pistol grip. Do you just keep carving till it feels right or are there std. dimensions that you try to follow for ergonomics. I'm trying to carve mine out right now and I've been going by how it feels but I'm missing a finger on my trigger hand and I want it to be ambidextrous as well. Thought I'd ask before removing too much material. I also want it to be an improvment on the stock grip.

toadmyster223 · Senior Member

The beauty of carving your own grips is that you can make them exactly how you want them. The standard is your hand. Just remember, you can't put it back after its gone.

Well, there are ways, but I'd like to stick with a solid piece of wood :P

ZipSnipe · Veteran Member

Exactly what Toady said!!!!

After cutting the contour out on a bandsaw, I then will take it to my router with a roundover bit and then rasp file the rest and just kept grabbing the handle until it feels right.

If ya don't have a rasp file I strongly suggest you go and get one with the half rounded side on it