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Originally Posted By PalmettoStateArmory:
All of the KS47 Bolts have lugs with different profiles than AR-15 bolts. There has not been a Gen2 or upgrade of this part. If you purchased a KS47 BCG from us, or received on in one of our uppers, it should work with either steel or polymer magazines without issue. If your PSA KS47 bolt does not have the special lugs, you have the wrong bolt. Contact customer service directly, they will be happy to take care of it for you. View Quote View All Quotes View All Quotes Originally Posted By PalmettoStateArmory:
Originally Posted By dervisionar:
I'm very interested in this lower/upper/BCG combo. But I'd like to see the issues with the BCG/stripping of various mags worked out officially by PSA. I appreciate everyone's grinding down the BCG on 4 and 8. But I think it would be better if PSA themselves would apply the fix. Sorry if that makes me a wuss. But I'm a little skittish about mods like that. |
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It's a joke, it's all a joke. Mother forgive me.
sd0324 is my ARFDad Teener Crew For Life |
Thank you for your posts. The lug design was changed on the KS47 from the AR47 to deal with the higher and wider magazine feed lips of the AK. The lugs at the 4 and 8 oclock positions do not have a square face profile. This change is the same "mod" people have reported and photoed here. The point being they do not have to mod their bolts, we will replace them for the correct one. If not having issues with the bolt hitting the feed lips, the correct bolt is installed.
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Palmetto State Armory
200 Business Park Blvd Columbia, SC 29203 Web Sales: 1-803-724-6950 [email protected] |
Originally Posted By PalmettoStateArmory:
Thank you for your posts. The lug design was changed on the KS47 from the AR47 to deal with the higher and wider magazine feed lips of the AK. The lugs at the 4 and 8 oclock positions do not have a square face profile. This change is the same "mod" people have reported and photoed here. The point being they do not have to mod their bolts, we will replace them for the correct one. If not having issues with the bolt hitting the feed lips, the correct bolt is installed. View Quote |
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"Good people do not need laws to tell them to act responsibly, while bad people will find a way around the laws." - Plato
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So, I took a look at the bolt in my ks47 and what do you know? The lugs at the 4 and 8 positions are a touch smaller than the rest. I think it would have helped if
they were beveled like some members have shown but they are about 0.3mm, or so, smaller than the other lugs. At first glance you don't really notice but when I broke out the calipers it was obvious. I think PSA is being a little disingenuous when they say those two lugs don't have a "square" profile though. They don't, they have a slight rectangular profile, but I wouldn't have noticed until I took a better look. Given what badkarmaiii did( beveling the inside edges of the lugs), I think a reasonable person would assume that's what the PSA rep was referring to, right? |
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Wenn ist das Nunstück git und Slotermeyer? Ja! Beiherhund das Oder die Flipperwaldt gersput!
Ernest Scribbler. |
So, to clarify, the "correct bolt" is supposed to have the two shorter lugs, or two standard length lugs?
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Originally Posted By PalmettoStateArmory:
Thank you for your posts. The lug design was changed on the KS47 from the AR47 to deal with the higher and wider magazine feed lips of the AK. The lugs at the 4 and 8 oclock positions do not have a square face profile. This change is the same "mod" people have reported and photoed here. The point being they do not have to mod their bolts, we will replace them for the correct one. If not having issues with the bolt hitting the feed lips, the correct bolt is installed. View Quote View All Quotes View All Quotes Originally Posted By PalmettoStateArmory:
Thank you for your posts. The lug design was changed on the KS47 from the AR47 to deal with the higher and wider magazine feed lips of the AK. The lugs at the 4 and 8 oclock positions do not have a square face profile. This change is the same "mod" people have reported and photoed here. The point being they do not have to mod their bolts, we will replace them for the correct one. If not having issues with the bolt hitting the feed lips, the correct bolt is installed. Originally Posted By Type561:
So, to clarify, the "correct bolt" is supposed to have the two shorter lugs, or two standard length lugs? |
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pics would be appreciated along with an AAR, this opens back this idea of building one up possibly with a stamp
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"The topic leaves a bad taste in some members' mouths, they're bitter and salty regarding their own outcome in life." - DangerJ
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I have yet to take my ks47 build out to shoot it, but I will take some pics of the bolt face and post them to see if they are the correct ones needed for reliable function.
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Originally Posted By wayne1one:
Please Please Please post a photograph, we are visual creatures. This will help alleviate questions like this...... I hope you can accommodate this simple request. View Quote |
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Originally Posted By MFRecon2:
The pics are a few pages back. Psa never had a special bolt for the ks47 until the end users did some r&d for them. View Quote |
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Originally Posted By badkarmaiii:
http://i338.photobucket.com/albums/n434/badkarmaiii/20161218_212536_zpsgnhys6fy.jpg View Quote |
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"The topic leaves a bad taste in some members' mouths, they're bitter and salty regarding their own outcome in life." - DangerJ
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Originally Posted By PalmettoStateArmory:
All of the KS47 Bolts have lugs with different profiles than AR-15 bolts. There has not been a Gen2 or upgrade of this part. If you purchased a KS47 BCG from us, or received on in one of our uppers, it should work with either steel or polymer magazines without issue. If your PSA KS47 bolt does not have the special lugs, you have the wrong bolt. Contact customer service directly, they will be happy to take care of it for you. View Quote View All Quotes View All Quotes Originally Posted By PalmettoStateArmory:
All of the KS47 Bolts have lugs with different profiles than AR-15 bolts. There has not been a Gen2 or upgrade of this part. If you purchased a KS47 BCG from us, or received on in one of our uppers, it should work with either steel or polymer magazines without issue. If your PSA KS47 bolt does not have the special lugs, you have the wrong bolt. Contact customer service directly, they will be happy to take care of it for you. Originally Posted By PalmettoStateArmory:
Thank you for your posts. The lug design was changed on the KS47 from the AR47 to deal with the higher and wider magazine feed lips of the AK. The lugs at the 4 and 8 oclock positions do not have a square face profile. This change is the same "mod" people have reported and photoed here. The point being they do not have to mod their bolts, we will replace them for the correct one. If not having issues with the bolt hitting the feed lips, the correct bolt is installed. IMG_0257 by 556 Channel (HD), on Flickr IMG_0258 by 556 Channel (HD), on Flickr IMG_0262 by 556 Channel (HD), on Flickr IMG_0260 by 556 Channel (HD), on Flickr IMG_0261 by 556 Channel (HD), on Flickr |
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Originally Posted By wayne1one:
Please chime in, sadly you failed to provide photos. I have taken time out of my day to provide photos so we can move forward. This can't be correct, the 4 & 8 o'clock lugs are noticeably thinner, but you stated that they do not have a square faced profile. SO CONFUSED NOW!!! This is a 2017 Bolt (I waited months for these to come in stock). What are you guys doing, is this correct or is there something out there that's more current? https://c1.staticflickr.com/3/2935/33962842895_c043d66735_b.jpg IMG_0257 by 556 Channel (HD), on Flickr https://c1.staticflickr.com/3/2934/33921572836_7b6e5c7d29_b.jpg IMG_0258 by 556 Channel (HD), on Flickr https://c1.staticflickr.com/3/2939/33962839965_f780598e9e_b.jpg IMG_0262 by 556 Channel (HD), on Flickr https://c1.staticflickr.com/3/2917/33962841945_f24d0d1798_b.jpg IMG_0260 by 556 Channel (HD), on Flickr https://c1.staticflickr.com/3/2856/33119235954_2e1b5ecb14_b.jpg IMG_0261 by 556 Channel (HD), on Flickr View Quote |
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Originally Posted By manywits:
I can't be certain but, to me it looks like your 4 and 8 o'clock lugs are not as thick/wide as the others. It looks as if the bottom of those lugs has had some material machined off, showing evidence just outside the beveled diameter that some additional machining has been done. You have the modified upgrade IMHO. View Quote |
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Originally Posted By wayne1one:
The photos that your referring to are a bit misleading. I don't think the actual production bolt looks like that, maybe the concept is the same but I think that they used another method to achieve the same results. That's why it's so important to have PSA confirm the pictures. I just took a few photos, I would like PSA to confirm these. I just received this BCG in March, so I'm guessing this is the correct setup. I would still like confirmation from them though. View Quote |
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Have we discussed how much material to take off the lugs in question?
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Originally Posted By wayne1one:
yes, it does have thinner lugs at the 4 & 8 o'clock, BUT if you read their post that's not indicative of the "Mod". PSA stated here that the lugs shouldn't have a square face profile on the 4 & 8 o'clock lugs. The one I have has a square face profile! View Quote |
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Wenn ist das Nunstück git und Slotermeyer? Ja! Beiherhund das Oder die Flipperwaldt gersput!
Ernest Scribbler. |
Originally Posted By wayne1one:
yes, it does have thinner lugs at the 4 & 8 o'clock, BUT if you read their post that's not indicative of the "Mod". PSA stated here that the lugs shouldn't have a square face profile on the 4 & 8 o'clock lugs. The one I have has a square face profile! View Quote View All Quotes View All Quotes Originally Posted By wayne1one:
Originally Posted By manywits:
I can't be certain but, to me it looks like your 4 and 8 o'clock lugs are not as thick/wide as the others. It looks as if the bottom of those lugs has had some material machined off, showing evidence just outside the beveled diameter that some additional machining has been done. You have the modified upgrade IMHO. For the record I removed much more material off those lugs on my bolt than you show and have had no issue what so ever with drag in the mag feed lips. My modified lugs are more off a wedge or triangle than bolts others have pictured. As stated I unfortunately do not post pics, but it is even more unfortunate that PSA has not help confirm the pics and or questions their customers have ask in regard to this. Hopefully soon PSA will clarify/resolve the issue.?. |
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Originally Posted By manywits:
As stated I unfortunately do not post pics, but it is even more unfortunate that PSA has not help confirm the pics and or questions their customers have ask in regard to this. Hopefully soon PSA will clarify/resolve the issue.?. View Quote |
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Does anybody know if PSA sells the upper receiver by itself and not part of a kit?
I have patiently waited since October and though I see kits and rifles being sold online, which means they do have these upper receivers on hand, the lower is always listed as "TEMPORARILY (they mean permanently me thinkem) OUT OF STOCK". I bought the lower to assemble one of these THE WAY I WANTED IT TO BE and if PSA does not offer the upper separately then I will have to give up on this assembly project and move on to my next bucket list rifle. I do not wish to throw away good money on a parts kit where I have to throw away 80% of the parts I do not want and then have to repurchase the same parts in the configuration I do want which common sense tells me not to do as it will make my buying experience completely unsatisfactory. Their might be a thread for a KS47 lower and bolt for sale but not sure who would buy it knowing they can not get the upper receiver or have to assemble a rifle in a configuration they are not interested in. Maybe someone out there has an upper receiver or if you have a kit what configuration-I maybe interested?-IM works for what you have to offer. If the PSA representative is still responding to this thread can you answer why I can not buy the upper receiver alone and why PSA is hoarding these when they sell the bare lower to buyer that mostly want to assemble in a configuration they want otherwise why bother and just buy the assembled rifle? THANKS! |
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Originally Posted By Larry-in-Eastbay:
Does anybody know if PSA sells the upper receiver by itself and not part of a kit? I have patiently waited since October and though I see kits and rifles being sold online, which means they do have these upper receivers on hand, the lower is always listed as "TEMPORARILY (they mean permanently me thinkem) OUT OF STOCK". I bought the lower to assemble one of these THE WAY I WANTED IT TO BE and if PSA does not offer the upper separately then I will have to give up on this assembly project and move on to my next bucket list rifle. I do not wish to throw away good money on a parts kit where I have to throw away 80% of the parts I do not want and then have to repurchase the same parts in the configuration I do want which common sense tells me not to do as it will make my buying experience completely unsatisfactory. Their might be a thread for a KS47 lower and bolt for sale but not sure who would buy it knowing they can not get the upper receiver or have to assemble a rifle in a configuration they are not interested in. Maybe someone out there has an upper receiver or if you have a kit what configuration-I maybe interested?-IM works for what you have to offer. If the PSA representative is still responding to this thread can you answer why I can not buy the upper receiver alone and why PSA is hoarding these when they sell the bare lower to buyer that mostly want to assemble in a configuration they want otherwise why bother and just buy the assembled rifle? THANKS! View Quote I ended up getting the upper and BCG for $200 out of pocket, by time I sold the kit It took less than a week to sell the kit in the EE. |
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"Good people do not need laws to tell them to act responsibly, while bad people will find a way around the laws." - Plato
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I bought both an upper and a bcd individually from PSA. They sold out fast each time I saw them.
FWIW I shot mine again today without issue. I use a mag with the feed lips ground down a bit. |
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"Good people do not need laws to tell them to act responsibly, while bad people will find a way around the laws." - Plato
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I'm not usually sensitive to recoil, but this thing has been beating up on me. 11.5 inch cut down by Morgan.
Attached File |
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Originally Posted By rlltd42:
I'm not usually sensitive to recoil, but this thing has been beating up on me. 11.5 inch cut down by Morgan. https://www.AR15.Com/media/mediaFiles/44277/Screen-Shot-2017-04-15-at-10-187834.JPG View Quote I ran across this info the other day and thought I'd share. This isn't my mod, just something I found.... https://thisguysguns.wordpress.com/2017/02/24/psa-ks47-magazine-fix/ |
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Originally Posted By loclass:
I found my midlength gas 16" had a solid recoil to it in stock form, so an 11.5" with carbine gas can't be any better. I installed a brake as well as a H2 buffer and Wolff buffer spring and it tamed it quite a bit. I ran across this info the other day and thought I'd share. This isn't my mod, just something I found.... https://thisguysguns.wordpress.com/2017/02/24/psa-ks47-magazine-fix/ View Quote I might have to try this, if PSA is not going to address the issue. |
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"Good people do not need laws to tell them to act responsibly, while bad people will find a way around the laws." - Plato
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Glad to see the solution is in the upper and not the lower, hope PSA implements this in Gen2 upper. Seems like a simple and smart fix!
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You would think for all of us that have already bought the upper, that they would give us an option on getting this fixed.
The beauty of the platform was being able to use AK mags, not being able to use AR15 lowers. I have never had plans to use my upper on a AR15 lower, I'd rather have a gun that goes bang every time. |
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"Good people do not need laws to tell them to act responsibly, while bad people will find a way around the laws." - Plato
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Originally Posted By TATBME:
Made it hot https://thisguysguns.wordpress.com/2017/02/24/psa-ks47-magazine-fix/ I might have to try this, if PSA is not going to address the issue. View Quote |
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Originally Posted By manywits:
The other option to achieve this same result would be to weld a small bead or mound of aluminum to the inside of the upper in the same location as the screw and then machine or file the bottom of the weld flat to find the proper stop height for the mag. If done correctly this method will not be noticeable from the upper's exterior. View Quote That's why I decided to mod the lugs. |
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"I suppose it is tempting, if the only tool you have is a hammer, to treat everything as if it were a nail." -Abraham Maslow
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Gents, has anybody purchase a bolt recently (in the last 2 months), If so is the bolt lugs clearing the magazine feed lips?
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I bought a BCG mid-Jan and it has the bolt drag.
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Originally Posted By loclass:
I found my midlength gas 16" had a solid recoil to it in stock form, so an 11.5" with carbine gas can't be any better. I installed a brake as well as a H2 buffer and Wolff buffer spring and it tamed it quite a bit. I ran across this info the other day and thought I'd share. This isn't my mod, just something I found.... https://thisguysguns.wordpress.com/2017/02/24/psa-ks47-magazine-fix/ View Quote View All Quotes View All Quotes Originally Posted By loclass:
Originally Posted By rlltd42:
I'm not usually sensitive to recoil, but this thing has been beating up on me. 11.5 inch cut down by Morgan. https://www.AR15.Com/media/mediaFiles/44277/Screen-Shot-2017-04-15-at-10-187834.JPG I ran across this info the other day and thought I'd share. This isn't my mod, just something I found.... https://thisguysguns.wordpress.com/2017/02/24/psa-ks47-magazine-fix/ |
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"All compromise is based on give and take, but there can be no give and take on fundamentals. Any compromise on mere fundamentals is a surrender. For it is all give and no take." -Ghandi
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I can't go back in time but why doesn't PSA do a deal like they did at the end of last year (ks47 rifle and flick 43 for $899) with the shields they are blowing out, 16" KS47 and a shield for $899, I'd be in for one
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"The topic leaves a bad taste in some members' mouths, they're bitter and salty regarding their own outcome in life." - DangerJ
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Originally Posted By Tactician73:
I haven't, don't see a need for it. I have both gas system on my builds and run a standard gas blocks. No issues with either unit. View Quote View All Quotes View All Quotes |
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"All compromise is based on give and take, but there can be no give and take on fundamentals. Any compromise on mere fundamentals is a surrender. For it is all give and no take." -Ghandi
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"I suppose it is tempting, if the only tool you have is a hammer, to treat everything as if it were a nail." -Abraham Maslow
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Well I hate to say it but even after all I read I took the plunge. Yes my bolt hits back of mags and needs replacing. However I called PSA customer service and they want the entire upper back. Ugh !! At least they emailed prepay label. I will say that with the two mags I altered the thing ran super nice. I figured I would give them a shot at getting it in running shape.
Now the other issue is I have become super interested in the 300 blackout. Time will tell if I keep my m92, ks47 or go to 300 blackout. |
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While packing the upper decided to double check the bcg. I do have the new bcg and yet the rounds still don't chamber properly. Looked at the.mags no signs of bcg wear or marks. Now I am beginning to wander if it's the feed ramps or both. Oddly no issues when I modified the mags. Hmmm probably a good idea to send complete uppet in after all.
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Does anyone know what a stripped lower weighs? I'm considering using this lower on a lightweight build but that information is unavailable. I did read this entire thread and it was very interesting.
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Originally Posted By 45leadslinger:
While packing the upper decided to double check the bcg. I do have the new bcg and yet the rounds still don't chamber properly. Looked at the.mags no signs of bcg wear or marks. Now I am beginning to wander if it's the feed ramps or both. Oddly no issues when I modified the mags. Hmmm probably a good idea to send complete uppet in after all. View Quote |
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I believe the pics you posted earlier is the newer bolt, as the first Gen was based off the semi-auto carrier and the newer one is the full-auto carrier. I had the same issues as everyone in the thread at first, after 2K rounds and a stronger buffer spring from springco, it runs like a dream with no issues. My BCG is the newer full-auto carrier for clarification. IMO, the standard carbine buffer spring is too weak new from PSA. It would take two passes of the charging handle to rack a round from a full 30 round mag. Yes, the bolt did drag a little on the mag lips causing further drag and resistance, and although the weapon would fire and sometimes get hung up, the more i shot, the more the gun loosened up and broke in. I believe a new stronger buffer spring should be an instant purchase and install for buyers, understanding that it's not right to purchase items for a gun that should work out of the box. I have the fostech echo trigger and ran 1500 rounds flawlessly until light primer strikes happened every other round, I purchased the orange buffer spring and an H3 buffer because I also shoot it suppressed to slow down the action, I can basically soot full-auto again with no issues. For unsuppressed users, I suggest a red spring with an H2. After 1K rounds, everything should be nice and worn in. I hope this helps solve some ppl's issues. The stronger spring will force that bolt forward even with pressure on the mag. Additionally, the buffer that comes with the rifle is too weak IMO, it should not weaken after 1500 rounds, let alone not be able to rack a round from a full 30 round mag.
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Just got a shipment of 10 KS47s today.
The bolt lugs are thinner but still drag if there's any pressure on the mag. Mine still drags some so I'll remove more material. |
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Just took the plunge and ordered an upper, hope the lowers come back in stock soon
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"The topic leaves a bad taste in some members' mouths, they're bitter and salty regarding their own outcome in life." - DangerJ
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Has any one tuned one up yet for a PDW pistol .....?? If so share some pics pleas
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I built two and had the "mag drag" issues. I'm not sure about the "bolt hitting the back of the mag" issue, but all the problems caused by pushing forward or resting on the mag are cured by installing the set screw in the upper. It costs about $1 and takes less than a half hour. After it's installed as per the link given a few posts back, you will have ZERO issues. It keeps the front of the mag from raising up and hitting the bolt with every mag I've tried. The only mags I have that won't work are the tapcos which don't let the rounds sit high enough to be caught by the bolt reliably.
If you have a ks47 and want 100%, just do the set screw fix (again, I've not seen or experienced the bolt hitting the back of the mag, just the ftf 's when pressure is applied to the bottom rear of the mag). |
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Originally Posted By borden_bob:
I built two and had the "mag drag" issues. I'm not sure about the "bolt hitting the back of the mag" issue, but all the problems caused by pushing forward or resting on the mag are cured by installing the set screw in the upper. It costs about $1 and takes less than a half hour. After it's installed as per the link given a few posts back, you will have ZERO issues. It keeps the front of the mag from raising up and hitting the bolt with every mag I've tried. The only mags I have that won't work are the tapcos which don't let the rounds sit high enough to be caught by the bolt reliably. If you have a ks47 and want 100%, just do the set screw fix (again, I've not seen or experienced the bolt hitting the back of the mag, just the ftf 's when pressure is applied to the bottom rear of the mag). View Quote |
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"Good people do not need laws to tell them to act responsibly, while bad people will find a way around the laws." - Plato
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On April 13th I foolishly sent my BCG back to PSA, thinking you would actually replace the bolt like you claimed you would in the April 6th PSA post on this thread. It has been nearly 6 weeks, and the only contact I've gotten from PSA, after multiple emails and a phone call to customer service that was of no help, is that they have my bolt, there is no fix, yet I should get my bolt back "soon." That was two weeks ago. At this point I just want my BCG back. I'll deal with the issue. My order number is 32102482459. Will somebody from PSA please take action on this and send my BCG bacK?
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