My 80% Spooky Build

Warhammer

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I've been toying with the idea of building out an 80% pistol for a while. 10 or 12 years back, I bought a Polymer80 kit on a ridiculous sale from Brownel's. Then I found out that buying the rest of the gun would cost more than a factory built Glock. So, the kit just sat in a box for a decade.

Fast forward to a few weeks ago and PSA was blowing out some Dagger uppers on clearance for about $160. So, I picked one up, planning to finally finish the P80 kit I had. Well, then I found that the kit had gone MIA in my move from Austin to Charlotte. Story of my life! Anyway, nothing to do but buy another lower. I found a $99 sale price on the GST-9 from 80% Arms. I like the design on this frame better than the Poly80 anyway. So I ordered the new frame and all the parts to complete it.

I got the upper in first. It has the forward sights and is cut for a Docter pattern optic (which is probably the reason for the clearance price). I also got the Docter patterned Trugo red dot they had on clearance for $69. The slide has tall enough sights to co-wintess and the various cutouts and milling are pretty cool, imo.

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The parts kit I ordered is nothing special. Just the basic Polymer80 completion kit.
The GST-9 (Ghost nine) frame is nice. It has swappable bottom pieces to go with a shorter or longer grip (Glock 17 or 19 length). The frame came with the short version and it cost an extra $10 for the longer one. The grip texture is really nice and the shape is MUCH better to hold than a Glock. The trigger guard has a pretty high undercut and there are textured "gas peddle" thumb rests on both sides, as well as an extended beavertail. I ordered the frame in FDE and the grip extension in OD. The FDE has a lot of green to it and he color difference between it and the OD is pretty slight.

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The jig for this frame is really nice! It has extended drill guides and I like how it bolts together to keep everything secure. The jig kit includes your front and rear rails, and the 2 drill bits and the Dremel bit needed to finish the frame. The entire process for drilling and milling the frmae took me maybe 15-20 minutes. And that was working slow since this was my first build of this type.

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From there, it's just assembling all the parts. Unfortunately, I got the wrong slide lock spring (got a 17 instead of a 19) which was too long to work. So, I'm on pause until I get the right spring. Knowing myself and my modding tendencies, I went ahead and ordered an upgraded trigger, transfer bar and connector, and extended mag & slide releases while I was at it.

So here's how it sits as I wait for more parts to arrive:

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I painted the front sight with Birchwood Casey sight paint. Two coats of white, then two coats of bright orange. It makes the front sight much easier to pick up, even through the slightly tinted glass of the Truglo sight.

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Looks great, glad you were able to take advantage of a PSA slide sale, I've given too much of my money to them lately! I'm curious how the grip module will stay after a few hundred(thousand?) rounds through it.
 
Looks great, glad you were able to take advantage of a PSA slide sale, I've given too much of my money to them lately! I'm curious how the grip module will stay after a few hundred(thousand?) rounds through it.
The bottom of the grip is held in place by 2 pins, so I think it will remain pretty solid.
 
I received the new slide lock spring today and also a Ghost Inc. Lo-Pro extended mag release. I have long palms and short little fingers, so I couldn't reach the standard release without breaking my grip. The Ghost Inc release is easy to reach, but still pretty low profile, so you won't bump it accidentally. I have an extended slide release on the way, too.

I also ordered a Ghost Inc Ultimate 3.5lb Trigger Kit w/ Connector & Springs, and an Overwatch Precision Poly DAT trigger. Knowing me, I would want to improve the trigger pretty soon anyway, so why not just start out with better parts?
 
I did an 80% P320 on a drill press, damn that thing was tedious

There is an 80% semiautomatic shotgun I want to do
 
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I just received a Ghost Inc. 3.5 Ultimate trigger kit for my 80% Spooky build. New trigger spring, plunger spring, firing pin spring & trigger connector. I'm still waiting for a few more parts to be able to complete my pistol.

Honestly, I'm pretty disappointed in the Ghost Inc connector. There are several really big burrs from where it was punched out of the sheet steel. I didn't expect to need to do a whole bunch of filing on a drip-in part.
 
Tracking said most of the final parts would be here Monday, but they actually arrived 2 days early! So, the only thing I'm missing is the new rea cover plate, but that's just a vanity piece.

I assembled most of the gun, but ran into 2 issues.

First, the new trigger from Overwatch Precision. It's much narrower at the pivot point than the one that came in my P80 completion kit. Because of that, it won't hold the slide release lever tightly. That means that sometime the slide locks open on an empty mag and sometimes not. So, I installed the cheaper P80 trigger and the problem is solved. The transfer bar on the Overwatch trigger is soooo nicely polished, but that's a moot point now. I'll just hit the P80 trigger with some Flitz and call it good.

So here' where we stand at the moment:
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The second issue is the rear rail pin. I can't get that dang thing to insert for anything. I think the rear pin hole must be off just a bit. I'm gong to try chasing the hole with the drill bit by hand to see if a tiny bi of adjustment does the trick. As it is, I can't even drive the pin in with a mallet. That pin the last thing I need to do to finish this build.

The offending pin hole:
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Issue 3 - This frame looks like it may have the front end "droop" that plagues many 80% lowers, according to the interwebs. The railed section at the front seems to angle down just a bit, leaving a gap between the frame and the slide. It shouldn't affect functionality, but it is ugly. I found one video where a guy fixed that issue with some heat and applied pressure. Once I fix the greater issue of the rear pin, I'll see about closing up that gap for a more finished look.

Mind the Gap:
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I bought a little gunsmith's block to cushion the pistol while I press pins in and out. I should have had one of these long ago. It defiantly works better than a scrap of 2x4.
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I got that last pin taken care of. I used a round needle file to lightly chase the hole in the right hand rail. After that, the new pin was super snug, but it did slide into place. I'd rather have it on the snug side that have to worry about it walking out while I shoot. So here's the finished gun:

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It hand cycles smoothly with snap caps through multiple different mags and locks back on empty. The trigger feels pretty crisp and has a nice short reset. After getting all the pins in, the gap at the front doesn't look all that bad to me. I probably won't mess with it. Now I just need to get to the range and really test it.
 
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One last piece... You can't make a spooky ghost gun without showing how scary it really is!

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As for the “front “ sagging, put in a holster…mine G20 is right the opposite it curves up…image.jpg

I leave mine in holsters all the time.
 
As for the “front “ sagging, put in a holster…mine G20 is right the opposite it curves up…View attachment 672806

I leave mine in holsters all the time.

I guess with plastic fantastic guns, that thin piece out front moving is just a fact of life. Not a big deal for a weapon light, but that would suck if you wanted to mount a laser. The gap on my GST-9 is minor enough that I've decided not to mess with it. As long as it doesn't effect the functioning of the gun, who cares?
 
Being the type who can't leave well enough alone (I have a modding addiction), I've ordered a few more parts. On the way is a Strike Industries Mass Driver Compensator. This is a pretty interesting comp, as it mounts to the guide rod instead of the barrel. All of the reviews I've seen have said it's the real deal, as far as reducing muzzle flip. Since it add no reciprocating mass to the barrel or slide, it shouldn't affect reliability, the way barrel mounted comps often do. Also, it looks seriously Sci-Fi, lol! The price from Optics Planet came in at $77 with a coupon code.


Since it works best with an unthreaded barrel, I also ordered a replacement barrel from Aim Surplus. I went with their copper colored finish. At $39 ($36 with a discount code), this is about the cheapest replacement Glock barrel you can find, but it gets pretty solid reviews.

 
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Being the type who can't leave well enough alone (I have a modding addiction), I've ordered a few more parts. On the way is a Strike Industries Mass Driver Compensator. This is a pretty interesting comp, as it mounts to the guide rod instead of the barrel. All of the reviews I've seen have said it's the real deal, as far as reducing muzzle flip. Since it add no reciprocating mass to the barrel or slide, it shouldn't affect reliability, the0 way barrel mounted comps often do. Also, it looks seriously Sci-Fi, lol! The price from Optics Planet came in at $77 with a coupon code.


Since it works best with an unthreaded barrel, I also ordered a replacement barrel from Aim Surplus. I went with their copper colored finish. At $39 ($36 with a discount code), this is about the cheapest replacement Glock barrel you can find, but it gets pretty solid reviews.

They make it sound super difficult to install but it really wasn't that bad. No idea if it works, I haven't shot it yet lol

Forgot the mandatory Pic!

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They make it sound super difficult to install but it really wasn't that bad. No idea if it works, I haven't shot it yet lol
Yeah, I've watched a few videos and it doesn't look too hard to install.

Slow motion videos of it being used are wild! You can see the comp slide forward on the guide rod as the slide moves to the rear. All the reviews say it feels very unique. Not bad, but definitely different than a regular comp.
 
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Yeah, I've watched a few videos and it doesn't look too hard to install.

Slow motion videos of it being used are wild. You can see the comp slide forward on the guide rod as the slide moves to the rear. All the reviews say it feels very unique. Not bad, but definitely different than a regular comp.
Yeah I saw the same. I figured it would help my losing the red dot issues, but then lost my convenient shooting spot lol
 
Great looking P80, btw!

I like the comp to slide fit. I'm not sure how it'll look on my gun, since the Dagger slide I bought has a really tapered front end. We shall see...
 
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Great looking P80, btw!

I like the comp to slide fit. I'm not sure how it'll look on my gun, since the Dagger slide I bought has a really tapered front end. We shall see...
Iirc that's a Rock Slide I sent off to be milled for an optic. Like an idjit I chose the Romeo Zero with its uncommon cut. Cost me far more than I could just buy one for now, but this was a while ago.
 
I finally received the Mass Driver comp today. Like @NCLivingBrit said, the installation wasn't really all that hard. After watching several online reviews, I bought 2 lower power springs for it, a 13 lb and an 11 lb. That way I can make adjustments as needed without waiting for shipping time. It looks good on the gun. Since the front profile of my Dagger slide is so tapered, it has a little bit of side-to-side play, but not too bad. The front edge of the slide already shows some finish wear, but that was expected.

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Had a great trip to the range. The gun functioned flawlessly! 100 rounds without a single malfunction of any kind. I got the dot sight zeroed and was putting 3-4 shots through the same hole in the target. I used the medium spring for the Mass Driver and it seems like I guessed right. No need to try other springs. It shoots well and feels great in the hand. I didn't shoot it without the comp, so I can't honestly say how much of a difference it makes. All of my Magpul PMags worked perfectly, too.

I brought my S&W 622 as well, so I could dial in the Holosun I just installed. Damn that thing is a tack driver!

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I bought a Nighstick light for my GST-9, but didn't like the glittery finish of their OD green. SO I Cerakoted the light with Magpul OD. It looks much better, but the Magpul OD is darker than the OD on my Dagger slide. Maybe I'll just Cerakote the slide to match.

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