Presma from optics 
. Less than 40 bucks. Not real beefy ,but works flawlessly so far. I have the PSA ambi on my other rifle and its extremely beefy and well made. Time will tell of this one holds up.
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Looks good, what muzzle is that?
It’s a Midwest Industries brake.
To be honest it was a goof up buy on my part. I was doing an AK build, and I decided to use this brake for it. I just looked at the picture which showed the AK brake with the notches for the pin to lock the muzzle device in place and saw that it was a .30 Cal brake, and didn’t read the rest of the description well. When I got it I was like “they sent me a 7.62 brake for an AR instead of an AK brake, and they messed up my order.” When I pulled up the order to return it I realized that I was the one that had messed up and ordered the wrong part. A year or two later I ended up with my KS47 and just decided to throw this brake on it. Lol
Serendipitous Screwup: it looks really good on there. I like it!
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Lol. Thanks. I think it sort of fits the theme of the gun. It looks like a brake that was intended mainly for the AR platform, but that was based off a 74’s muzzle device. Something like that I think.
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BBL an’ Ma’ Trigga’ came today, Dawg!
Now jus’ gots ta’ DIG, Yo! Thru boxes of ma’ STASH fo’ tha’ rest’O ma’ parts!
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looking good. ima bit jelly i havent built one of those yet.
Agreed.
I used to always want to build a KS47, but PSA never had just the receivers in stock.
I feel like an idiot because I keep building these 80% Glock based guns which in new for me. I always used to say that I wouldn’t get into building pistols as their valve is lousy compared to rifles, but here I am.
I need to go ahead and pick up a set of KS47 receivers. What non-PSA parts will work with it? If I’m not mistaken doesn’t the KS47 require the PSA KS47 bolt and a PSA barrel made specifically for the KS47, and won’t take any other bolt/barrel combo’s that’s made for AR chambered in 7.62x39?
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You can use anything you want besides receivers and the BCG. Actually, other BCGs will work, these are just milled for AK mags whereas others will require you modify the magazine. If you get the essential builders kit it will have upper, lower, and BCG. Pick up a couple of spare extractors from PSA while you’re at it.
Pic thread…
Here’s a. Example of what I’m talking about. The only thing PSA are the receivers and BCG.
Barrel is YHM, and everything else is a mix of Geissele and BCM.
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Thot’s Dahm Secksie - AYE!
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As stated above you can have a Mil Spec BCG milled with an “AK cut”( cost me about $50), but has worked well for me. Gibbz Arms offers a side charging upper and Billet Rifle Systems offers, both, uppers and a lower in the KS-47 style. As for the barrel, PSA’s KS-47 barrel is a standard 7.62x39 carbine length gas system barrel which has had the M4 feed ramps milled into a single ramp to aid in feeding the x39 round.
I have a 16" build that uses a PSA lower, with a Gibbz Arms upper, an “AK cut” BCG, and a BCA barrel that had the feed ramp re-formed for 7.62x39. It is a great shooting gun, however, I am thinking about changing out the heavy 16" carbine barrel for a lighter 18" mid length barrel and adding an adjustable gas block so I can go back to a standard buffer and spring( at present I am using an adjustable weight buffer and rifle length spring on it).
I’m not saying you need to use any of these parts. I have a factory 10.5" PSA KS-47 that I absolutely love, so any PSA upper, lower, or essential build kit will work great for any project, I’m just pointing out that there are many options for a potential project. Whatever you may decide to put together please make sure to post pics for the rest of us to drool over.
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Good to know. It never made sense to me for a KS47 to not be modular with other AR parts. I mean unless the diameter of the hole to mount the barrel in the upper was different than your AR15 spec, (or something of this nature) then I don’t see why any other AR barrel in 7.62x39 wouldn’t work. I read that somewhere a while back, and I was like, “really?” I think I might of been on the Files or something asking about building a KS47 and was told this. I can’t remember for sure though. Again it never made sense for PSA to develop an AR based firearm, that uses AK 7.62x39 magazines, but then have all your other major components out of standard AR specs. I believe some of the drop in trigger groups that are pre-assembled in those billet housings (whatever they’re called) can’t be used in the KS47, or is this also incorrect? I’ve been thinking about adding my go to LaRue MBT2S trigger in my KS47, but in life there’s other priorities, and honestly for what the gun is the factory PSA EPT (which I believe my lower came with) is decent. It reminds me of an ALG QMS I have in another AR. Just a Mil-Spec trigger group that’s been made to be smoother than the average Mil-Spec trigger group.
The KS-47 upper is 1mm wider than you standard Mil Spec upper, so there can be issues on some accessories. I use a Devil Dog Concepts Hard Charger side charger on my 10.5" KS-47, so I had to do a little filing on it to get it fit right on the top pic rail. This wasn’t a huge problem, but is something to be aware of. As for triggers, any two piece trigger should work fine, but if you are using a cassette style there are a few things to know. Because the KS-47 uses an AK style paddle mag release, one of spring legs sits in the bottom of the lower receiver. This isn’t a problem for two piece systems, but will interfere with a cassette style seating properly. There are two options for this. 1. PSA Customs makes two 3.5# drop in triggers( a curved bow and straight bow) that already have a slight cut in the housing to allow them to be used with the KS-47. 2. You can mark the trigger, you want to use, and Dremel or file a notch into it’s housing. It doesn’t take much, so it’s not that hard. I will say that I have used the PSA curved bow trigger and I love them, BUT, because of the hard primers of the steel case ammo, I primarily use, I got a lot of light strikes with them, even using the enhanced firing pin, normally advised for 7.62 ARs.
Another quick tip, any 7.62x39 bolt will work in the BCG, but you will need to chamfer two of the locking lugs so the it will pass between the magazine feed lips and it is best to have a few extractors on hand( the PSA T/C enhanced extractors are great).
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This issue comes up often enough…that we should have an answer….that is better than……”it’s Proprietary”.
To better explain it….or to satisfy my insatiable curiosity…… I took to measuring three different bolt carriers so we could compare their different characteristics.
The results confirm what we already knew and it will help understand the tiny difference it makes between the bolt stripping off the next round of ammunition’s from the magazine……or….passing over it, failing to chamber.
This is not Scientific…I don’t have laser measuring devices. Just a dial caliper, and a flat true block to base the measurements from.
What we see is the three carriers measure almost identically (within a margin of error)……except for the height/depth of the bearing surface. The height/depth of the bearing surface is EVERY THING when it relates reliably stripping off that next round in the magazine.
The AR carrier is our baseline.
The KS-47 hybrid carrier is original without any modification.
The PCC is an AR carrier that has been machined to work over a Glock magazine
Measurements in column E are the tell-tale difference in the height/depth of how the carrier rides in the upper receiver and it’s relationship to the magazine.
Our three Test subjects:
A view of the business end of the three carriers:
The measurements I recorded for each carrier:
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I have a Geissele SSA-E in my KS47 above, and it doesn’t like Wolf ammo. I get 50% light primer strikes with my setup and am thinking of going to an “enhanced” firing pin for my rifle to fix the issue.
I typically shoot Tulammo, but I’d like the option to reliably shoot anything.
Has anyone else had experience with a G trigger…?
@Jroc734 I’ve used a MBT-2S in the rifle before with good results, but I have not tested Wolf with this setup…
I have the same trigger in my KS-47. Most of my target practice Ammo is “Monarch”….which Is a Russian Ammo sold exclusively marketed for Academy Sports store.
No light primer strikes on that brand of Ammo. The Geissele trigger works wonders on it.
I may be mistaken….but I believe that the KS-47 firing pin is already profiled as an “enhanced” firing pin.
I use Geissele triggers in all my guns. Some steel case ammo has harder primers so you might need a stiffer spring.
I was afraid of that… any idea what the stiffer spring does to the trigger’s pull weight?
Maybe I’ll just shy away from Wolf…
I stockpiled Tula back when it was dirt cheap.