Derya pump and bolt action 9mm pcc
- Thread starter gallen270
- Start date
Polymer flip up sights with a rear peep sight. They are on the cheaper side, though.
The gun also comes with an iron rear sight mounted on the rail and the original front sight, if you want to remove the front rail and configure the rifle like the straight stock version (aka Fudd version).
.
Thanks. I like peeps. Mine should arrive this week, and hopefully I'll be shooting it on the weekend.
Thanks. Yeah, I saw that one too. I hope somebody does a review and cleaning one too.
KyleSchenk
CGN Regular
So I got my hands on one of these yesterday. As stated, the pump handle could stand to have a little more purchase area on it for your mitten. So as usual , I can't leave well enough alone. The first thing I did was pull the gun apart and see what could be easily done to remedy this. The plastic grip portion is held on to the metal guide/pump arm assembly with two flat head bolts.( Any one wanting to 3d print something, this should be a feasible route)On the inside there is ample clearance between the guide rod attached to the reciever and the inside of the pump handle. I had a spare Picatinny rail kicking around and decided it was going to get mounted.
I made up a backer plate for inside the pump handle, to thread the bolts into to secure the rail. The pump it's self has a wall thicknesses on the bottom side of around .200" thick so I don't really have any concerns about the structural integrity of punching a couple holes & mounting there.
Next, as has been previously mentioned, theres an annoying clack when the pump is operated rearward and makes contact with the front of the reciever. I rummaged around for something to use as a cushion here. I found a flat plumbing washer ( for a shower head maybe
) that had a slight larger i.d. than the o.d. of the pump guide rod. I slipped it over and reassembled the gun.
Since the washer is around an 1/8" thick, I had concerns about it not allowing the bolt to travel reward enough to pick up a round. I loaded up a mag and tested feeding with some dummy rounds I had. With the two reciever half's held together by hand, the rubber washer didn't impact feeding from a loaded mag. ( The dummy rounds I used were loaded with 124gr RN, with an overall length of 1.150")
After I confirmed function, I gave the gun a full cleaning and reassembled everything. I'm not sure what I want to run on the newly installed rail though I elected to try a magpul hand stop for the inaugural test firing this weekend.
Here's a couple more shots of the bolt and internal workings of the carbine. Over all, I'm quite happy with it so far. The machining is quite decent and I didn't have the partially stripped screws that had been previously mentioned. I had also read earlier that someone else has a bolt/ reciever with sharp edges that needed to be addressed. My bolt has been well deburred and all the edges were knocked off/radiused.
I made up a backer plate for inside the pump handle, to thread the bolts into to secure the rail. The pump it's self has a wall thicknesses on the bottom side of around .200" thick so I don't really have any concerns about the structural integrity of punching a couple holes & mounting there.
Next, as has been previously mentioned, theres an annoying clack when the pump is operated rearward and makes contact with the front of the reciever. I rummaged around for something to use as a cushion here. I found a flat plumbing washer ( for a shower head maybe
) that had a slight larger i.d. than the o.d. of the pump guide rod. I slipped it over and reassembled the gun.Since the washer is around an 1/8" thick, I had concerns about it not allowing the bolt to travel reward enough to pick up a round. I loaded up a mag and tested feeding with some dummy rounds I had. With the two reciever half's held together by hand, the rubber washer didn't impact feeding from a loaded mag. ( The dummy rounds I used were loaded with 124gr RN, with an overall length of 1.150")
After I confirmed function, I gave the gun a full cleaning and reassembled everything. I'm not sure what I want to run on the newly installed rail though I elected to try a magpul hand stop for the inaugural test firing this weekend.
Here's a couple more shots of the bolt and internal workings of the carbine. Over all, I'm quite happy with it so far. The machining is quite decent and I didn't have the partially stripped screws that had been previously mentioned. I had also read earlier that someone else has a bolt/ reciever with sharp edges that needed to be addressed. My bolt has been well deburred and all the edges were knocked off/radiused.
Nice mods. Thanks for posting.So I got my hands on one of these yesterday. As stated, the pump handle could stand to have a little more purchase area on it for your mitten. So as usual , I can't leave well enough alone. The first thing I did was pull the gun apart and see what could be easily done to remedy this. The plastic grip portion is held on to the metal guide/pump arm assembly with two flat head bolts.( Any one wanting to 3d print something, this should be a feasible route)On the inside there is ample clearance between the guide rod attached to the reciever and the inside of the pump handle. I had a spare Picatinny rail kicking around and decided it was going to get mounted.
View attachment 1158489View attachment 1158490View attachment 1158491View attachment 1158492
I made up a backer plate for inside the pump handle, to thread the bolts into to secure the rail. The pump it's self has a wall thicknesses on the bottom side of around .200" thick so I don't really have any concerns about the structural integrity of punching a couple holes & mounting there.
View attachment 1158493
View attachment 1158494
Next, as has been previously mentioned, theres an annoying clack when the pump is operated rearward and makes contact with the front of the reciever. I rummaged around for something to use as a cushion here. I found a flat plumbing washer ( for a shower head maybe
View attachment 1158498
Since the washer is around an 1/8" thick, I had concerns about it not allowing the bolt to travel reward enough to pick up a round. I loaded up a mag and tested feeding with some dummy rounds I had. With the two reciever half's held together by hand, the rubber washer didn't impact feeding from a loaded mag. ( The dummy rounds I used were loaded with 124gr RN, with an overall length of 1.150")
After I confirmed function, I gave the gun a full cleaning and reassembled everything. I'm not sure what I want to run on the newly installed rail though I elected to try a magpul hand stop for the inaugural test firing this weekend.
View attachment 1158505
Here's a couple more shots of the bolt and internal workings of the carbine. Over all, I'm quite happy with it so far. The machining is quite decent and I didn't have the partially stripped screws that had been previously mentioned. I had also read earlier that someone else has a bolt/ reciever with sharp edges that needed to be addressed. My bolt has been well deburred and all the edges were knocked off/radiused.
View attachment 1158506View attachment 1158507View attachment 1158508
KyleSchenk
CGN Regular
I'd recommend pulling through it. My barrel's bore was quite saturated with the corrosion inhibitor slime from the factory
You're right. I'll at least push a few patches thru it.
Nice work on the rail install Kyle!
I'd lean towards the shortest vertical grip I could find.... did a quick search and it looks like the Samson Short Picatinny VFG
is the shortest option, bit pricey but only around 2 1/4" long, enough to hook a couple fingers around but not be too obtrusive.
I'd lean towards the shortest vertical grip I could find.... did a quick search and it looks like the Samson Short Picatinny VFG
is the shortest option, bit pricey but only around 2 1/4" long, enough to hook a couple fingers around but not be too obtrusive.
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KyleSchenk
CGN Regular
Yeah, I still haven't decided. Fortunately, I've got lots of options in the parts boxes around here to find what works best for me.Nice work on the rail install Kyle!
I'd lean towards the shortest vertical grip I could find.... maybe a BCM?
https://www.gotenda.com/product/bcm-vertical-grip-short-mod-3-picatinny/
I was wondering if a Picatinny rail could be bolted onto the pump assembly
Looks like it can thanks for being the first to try to do it, I just might do the one on mine too as I have a 7 slot plastic magpul one still in the package
Looks like it can thanks for being the first to try to do it, I just might do the one on mine too as I have a 7 slot plastic magpul one still in the package
Warranty? What warranty...?
Most of us have gone to town on this thing with mods already to make it smoother, better and more ergonomic. Warranty is certainly voided for us tinkerers, lol!
This pump 9mm feels like it's 1964 and a little workhorse known as the Ruger 10/22 just dropped, bwahahahahaha!!!
Do you know what the OD measurement of the pump guide rod is? I just watched the bats youtube review and it seems that working the pump and clacking against the upper might cause the handguard to crack. The rest of the review seemed pretty aligned with whats been said (ie. loose stock/grip after going through some rounds and to loctite), as well as finding the handguard in desperate need for a bottom rail/fatter handguard.So I got my hands on one of these yesterday. As stated, the pump handle could stand to have a little more purchase area on it for your mitten. So as usual , I can't leave well enough alone. The first thing I did was pull the gun apart and see what could be easily done to remedy this. The plastic grip portion is held on to the metal guide/pump arm assembly with two flat head bolts.( Any one wanting to 3d print something, this should be a feasible route)On the inside there is ample clearance between the guide rod attached to the reciever and the inside of the pump handle. I had a spare Picatinny rail kicking around and decided it was going to get mounted.
View attachment 1158489View attachment 1158490View attachment 1158491View attachment 1158492
I made up a backer plate for inside the pump handle, to thread the bolts into to secure the rail. The pump it's self has a wall thicknesses on the bottom side of around .200" thick so I don't really have any concerns about the structural integrity of punching a couple holes & mounting there.
View attachment 1158493
View attachment 1158494
Next, as has been previously mentioned, theres an annoying clack when the pump is operated rearward and makes contact with the front of the reciever. I rummaged around for something to use as a cushion here. I found a flat plumbing washer ( for a shower head maybe
View attachment 1158498
Since the washer is around an 1/8" thick, I had concerns about it not allowing the bolt to travel reward enough to pick up a round. I loaded up a mag and tested feeding with some dummy rounds I had. With the two reciever half's held together by hand, the rubber washer didn't impact feeding from a loaded mag. ( The dummy rounds I used were loaded with 124gr RN, with an overall length of 1.150")
After I confirmed function, I gave the gun a full cleaning and reassembled everything. I'm not sure what I want to run on the newly installed rail though I elected to try a magpul hand stop for the inaugural test firing this weekend.
View attachment 1158505
Here's a couple more shots of the bolt and internal workings of the carbine. Over all, I'm quite happy with it so far. The machining is quite decent and I didn't have the partially stripped screws that had been previously mentioned. I had also read earlier that someone else has a bolt/ reciever with sharp edges that needed to be addressed. My bolt has been well deburred and all the edges were knocked off/radiused.
View attachment 1158506View attachment 1158507View attachment 1158508
KyleSchenk
CGN Regular
The rod measures .556" Ø. I too was concerned about the impact of the handguard against the reciever and any long term effects of it. That's why I tested it out with the 1/8” thk rubber washer installed. I might switch it out to a thinner one and do trials with it. I've got 300rds through mine so far. The only issue I've had is weaker ejection early on with a handful of empties( 3 or so). Live rounds get tossed 5 counties over. It could just be breaking in or it could be the washer. I'm going to head out tomorrow to do some more testing. I think I may have been being too gentle while racking the pump. That or the current washer is to thick and adding too much cushioning to the cycle. Or it might need the 1/8” of stroke that's been removed. I'll have to fart around with it and see what's going on.
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Thanks for the reply. Any update would be greatly appreciated! Mine is coming in a few days so I'm trying to get things sorted out so I know what to prepare for. Maybe a 1/16" thick washer would help...I'll see what I have laying around.
