GTA
All Springer/NP/PCP Air Gun Discussion General => "Bob and Lloyds Workshop" => Topic started by: lloyd-ss on January 22, 2016, 03:22:16 PM
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This is my first attempt at making a bullpup, and the project has taken a couple of years. I went down some dead ends on the way, and made some major changes along the way, too. It is already spoken for.
Started with a Benjamin Marauder Pistol and an Airgun Lab P-Rod Double tube kit. The stock , which is a compilation of some other designs I have seen, is made from obeche, a soft, light, straight grained wood often used for interior and exterior trim in houses (at least in the mid-Atlantic coast). It is very easy to work by hand. I used a small drill press with some big Fostner bits, some sanding drums, a router, wood files, and lots of sand paper. The obeche from the lumber yard was 5/4 x 6 (actual size 1" thick x 5-1/2" wide) and I doweled the 2 halves together so that I could take them apart and together during the build. I ended up gluing the 2 halves together before final sanding and finishing.
The gun slides in and out of the stock in alignment with the pistol grip frame, looking at the picture, in the 1:00 o'clock direction. A pair of brass 8-32 pan truss head screws (cabinet door handle screws) secure the stock to the gun. The butt pad is one that I got from Numrich gun parts in " six NOS and used butt pads for $15," type of deal. This one worked perfectly, and the name molded into it is : Pachmayr Gun Works, Los Angeles, Calif. Maybe a bit of history there.
I started with standard length tubes on this gun but ended up making everything about 5" longer. The shroud and a lower air tube are one-piece, and the main tube has a 5" extension. The front barrel band clamps all the tubes together and has a Picatinny rail on the bottom. Final OAL is 25", weight without scope is 4 lbs 14 oz, and it holds a whopping 220 ccs of air. (Standard P-Rod capacity is less than 70ccs)
The scope rail is a Picatinny style from XpertGear.com. They have some unusual stuff and their prices are good. Unfortunately, the rail had a Picatinny bottom, also, so I had to mill that off and then mill a dovetail slot to match the P-Rod receiver. It turned out pretty decent, but the scope in the picture isn't really appropriate for the gun.
(http://i226.photobucket.com/albums/dd79/loyd500/Dinesh/P-Rod_Bullpup-1_zpsvmkxdmd5.jpg) (http://s226.photobucket.com/user/loyd500/media/Dinesh/P-Rod_Bullpup-1_zpsvmkxdmd5.jpg.html)
The trigger took a few attempts, including a couple of them in the junk pile. This one is made of .250 dia SS tube with .025 wall (I think) that I deformed enough so that it would take a 10-32 tap. The trigger shoe is just a section of aluminum tubing with a flat head screw securing it to the SS tube. I split the other end of the tube with a hacksaw and then heated it and bent it into a fork to fit the trigger adapter that I made. I had to heat the thin wall of the tube to keep it from cracking when I bent it. The adapter for the P-Rod trigger was a major pain to make, but it finally worked, and it stays put.
(http://i226.photobucket.com/albums/dd79/loyd500/Dinesh/D-bp-5a_zpsecf365ef.jpg) (http://s226.photobucket.com/user/loyd500/media/Dinesh/D-bp-5a_zpsecf365ef.jpg.html)
I have a light spring that takes up the free play in the trigger linkage. The tension in the trigger assy had to be raised a bit to compensate. Also, the safety is not active (not a good thing) but I could have drilled thru the sides of the stock to make the original safety accessible... I think so, anyway. But now that it is all glued up, I doubt I could do that without messing something up. The groove in the aluminum attachment block and the channel in the wood, keep the trigger linkage in alignment. I am actually kind of surprised how smoothly the trigger functions. Maybe I got lucky on that count. Or maybe its because it was my third design, ha, ha. This sort of thing just takes a lot of time, and a willingness to trash it and start over when you know its not right.
(http://i226.photobucket.com/albums/dd79/loyd500/Dinesh/D-bp-6a_zps54370829.jpg) (http://s226.photobucket.com/user/loyd500/media/Dinesh/D-bp-6a_zps54370829.jpg.html)
Here you can see the 2 brass attachment screws. The pistol grip slides snuggly down at an angle ( down in the 7:00 o'clock direction in this picture) into a pocket and everything ends up married nicely together.
(http://i226.photobucket.com/albums/dd79/loyd500/Dinesh/P-Rod_Bullpup-4_zpsyfua0t6y.jpg) (http://s226.photobucket.com/user/loyd500/media/Dinesh/P-Rod_Bullpup-4_zpsyfua0t6y.jpg.html)
Here the beauty is. It needs an appropriate scope, and a cheek rest, but other than that, it ought to do OK.
(http://i226.photobucket.com/albums/dd79/loyd500/Dinesh/BullPup-Logo-1_zpsieb0leeg.jpg) (http://s226.photobucket.com/user/loyd500/media/Dinesh/BullPup-Logo-1_zpsieb0leeg.jpg.html)
Lloyd-ss
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Very Nice 8)
And very impressive specs!!
what power range is it set at? shot count?
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That is a very nice looking gun!! 8)
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Very Nice 8)
And very impressive specs!!
what power range is it set at? shot count?
Joseph, I haven't given it a tune yet, but it could certainly be tuned pretty hot with that amount of air.
Matthew, Thank you! Glad you like the look.
Lloyd
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Well Done Lloyd ... Fun project to be sure !
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Thanks Scott, it had its moments, to be sure.
Lloyd
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BRAVO!!!!! That is by far the nicest prod bullpup ive seen! Lloyd it is marvelous.
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Maybe an MTC Connect scope?
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I like it. It came out very nice, color on the stock came out great! The stock, double tube & cantilever rail (perfect combo)!
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Wao! Wao, and Wao!!!
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BRAVO!!!!! That is by far the nicest prod bullpup ive seen! Lloyd it is marvelous.
Totally agree.
That is absolutely gorgeous Lloyd!
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I like it.
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Aw shucks guys. I'm gonna get embarrassed. :-[
But thanks. One of those projects where the second one would take half the time to make.
Lloyd
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Now you have to add a SSG... and report your findings... ;D. My Rapid mini-bullpup will soon become a vintage item :'(.
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;) Very nice Lloyd now get someone to make a kit. With your Bull pup a plastic stock makes sense for the market and maybe a walnut stock version for the purists out there
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Very nice! Is that DIY rail or are those for sale somewhere?
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Very nice! Is that DIY rail or are those for sale somewhere?
The scope rail is purchased and modified. I describe it in the paragraph directly above the first picture in the post. It is stouter than I thought it would be.
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That is one sweet rig Lloyd.
So when can i place an order for one ;D
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WOW! That's beautiful. I just sold my rapid 70 Prod pup because it was too small, that 1 looks perfect.
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You might call this "A gun of a handy size." ;) I just noticed that I misstated the length, though. Overall is 25", not 23". I will fix the picture. The weight of 4 lbs 14 oz w/o scope, is correct. It's pretty compact, and probably too small for anyone over 5'-8".
Lloyd
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hi lloyd....long time.
looking good for a BP
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hi lloyd....long time.
looking good for a BP
Hi Daniel, Yes, it has been a while. :-[ I know you are not much of a bullpup fan :P, but you are a tall guy. Us short guys see the appeal in a bullpup, ;) LOL.
Lloyd
P.S. Did you get a bunch of snow, too?
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I dont think we got as much as you did but at my house I have about 12-14in and it is still coming down. I was never fun of the BP aesthetics but that is just my taste. I do have to say that you did real well with that one.
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Very nice work Lloyd,
I do remember when you started this awhile back, it sure turned out nice for sure. I can tell you one thing Lloyd, that air volume is over 3 times the original Prod, mine is 65 cc factory and I get 24 shots with 14 grain Crosman at around 680 FPS! Your little pup could shoot all day ;D
I have also started a project about a year ago, it is a Bullpup Disco and have a stock already fitted, just need the trigger and scope hardware, maybe this summer I can finish or next summer lol
Anyway that really is one sweet looking Mini-Pup thats for dosh gone sure, I love it ;D
William