Gentlemen behold! The Rodpup!
Benjamin This is a bullpup. There are many like it, but this one is mine.
- Thread starter Dr. Kralenstein
- Start date
I have to give a big shout out to @SteveV for donating parts for this build. I needed a 2300 tube for my 30 cal carbine I built last month, and he reached out and offered to send me one.
Well, he sent that, a Prod valve, 1701 tube, some odds and ends, and an extra 2300 tube(which is in the works for a build too).
So here I sat, wondering which way to go when I stumbled across the Prod bullpup kit on the classifieds. It's been thru a few owners on here, and it has some wear which, unlike me to leave it, I actually did. I'm not painting a thing on this gun, I want it battle worn!
I had to cut the center frame out to fit the shorter 1701 tube, and also cut the trigger linkage down and move the scope rail. Easy enough. Then had to nip the front grip framing off to accommodate the drop block.
Running a Prod barrel with port and valve matched to barrel, a 2000 psi regulator, and 200cc 3000 psi bottle, I've got a solid 60 shots at 15-20 fpe and it's oh so quiet thanks to the Kral moderator.
Tomorrow I will get to send lead out to 30-40 yards and see how she does.
Also have a 15 round Maple mag for it which looks huge on this 26" rig.
Well, he sent that, a Prod valve, 1701 tube, some odds and ends, and an extra 2300 tube(which is in the works for a build too).
So here I sat, wondering which way to go when I stumbled across the Prod bullpup kit on the classifieds. It's been thru a few owners on here, and it has some wear which, unlike me to leave it, I actually did. I'm not painting a thing on this gun, I want it battle worn!
I had to cut the center frame out to fit the shorter 1701 tube, and also cut the trigger linkage down and move the scope rail. Easy enough. Then had to nip the front grip framing off to accommodate the drop block.
Running a Prod barrel with port and valve matched to barrel, a 2000 psi regulator, and 200cc 3000 psi bottle, I've got a solid 60 shots at 15-20 fpe and it's oh so quiet thanks to the Kral moderator.
Tomorrow I will get to send lead out to 30-40 yards and see how she does.
Also have a 15 round Maple mag for it which looks huge on this 26" rig.
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That is an AWESOME compact build! I hope many a rodent and feather succumb to it! Enjoy shooting it 
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I didn't think about how big it would look ok this thing! I just saw "15 rounds" and hit buy it now!
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Pretty rad! This is something I've wanted to do since before I had machines. Still have the gen 1 marauder that made me want it.
Is the regulator a game changer on your rod?
Is the regulator a game changer on your rod?
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It definitely regulated it and made it more efficient. I might get one with a lower pressure so I have more adjustability. The 12" barrel is limiting me for the 2000 psi setting.
For instance, it will do 780 fps with 14 grain at full hammer spring, but an 18 grain is doing 760 fps. On lightest hammer setting, it's still doing 15 fpe but evenly across pellet weights then. I guess I could swap to a softer spring first and see.
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LOL - I knew that tube wouldn't lay around in your parts bin for too long! Great job breaux, you have the knack, the eye, and the imagination.
Now go kill something with that thing!
Now go kill something with that thing!
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Interesting how a little more or less pellet weight, slightly different bc of .028 vs .032, and only a 20 fps speed difference makes on longer range pfe. Those 18 trainer's look much better for hunting distances.
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And here you were poopooing rear cocking bullpups and go and build a rear cocking bullpup. Time to break out those shade tree engineering skills and make a forward cocking bolt action. Balls in your court sir.
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Oh I'm already looking at ways to make it a left handed side lever. I have some parts laying around, and with it being a metal framed gun, it should be easy to make a bracket to mount the assembly.
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Those do look nice, but they didn't group tight enough at 30 yards. I like one hole groups at 30.
It did however give me one hole groups with baracuda match 5.52mm 21 grain! Need to crank it up and chrony those.
As of right now, the muzzle report sounds like someone spitting a chunk of leftover broccoli out of their teeth! No ping, no hammer slap, just "pfft".
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The sear spring is giving me an issue. It won't engage now when at level, only if I point it down. Good thing I know a guy who can fix it! I think it needs to be just a smidge longer. It's super light pull too, so that'll add a couple ounces back to the trigger which is a good thing because it's slightly unpredictable ATM.
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