PTW Mags

m102404 · June 9th, 2009, 10:59

I've got a bunch of PTW mags and a couple of them are not feeding too well.

The rifle itself works just fine.

With the "problem" mags, they don't seem to feed (i.e. if i notice a misfeed and drop the mag, I can see the next bb down in the feed path). If I tap the mag, the bbs will jump up into position. A shot or two...then the same thing. They're used...unknown how much/etc...

Regardless...some of the other mags don't feed quite fast enough either. They work perfectly in semi...shot after shot for the entire mag. But in Full auto...I'll get chopped BBs. The new Saber mags work much better semi/full...so it gives confidence that it's not the PTW. I do notice that the spring force of these mags are much stronger than the used Systema ones.

So, I'm going to take the worst of the bunch apart, clean them out, see if I can't fiddle with the spring, etc...

But to scope it out in advance...what mags are you guys using? I have a couple of Saber mags and they seem to work ok. How about MAG mags, Boom mags? Are there any others that are solid alternatives. I don't think that I'll go the route of PMags...don't really care for that look. I get the realism of "real" metal AR mags...but the lighter/cheaper alternatives are attractive.

Opinions? Order new springs for the existing mags? Just buy new ones? Buy more Saber/other?

Thanks,

Tys

KND · June 9th, 2009, 11:09

Would you mind if I ask you what BBs do you use ? I counter a lots of BBs that don't feed with my PTW and only one brand that feed perfectly.

KND

m102404 · June 9th, 2009, 11:22

I'm using new Madbull 0.28's primarily. KSC 0.20's as well...but that's more for testing.

Like I said, feeding from some mags is fine...semi auto. In some of the used/old Systema mags...semi isn't reliable. In two of the Systemas...semi is fine, full auto is a no-go. In 4 of the Sabers...semi is fine and full auto is ok.

What mags/bbs do you use?

KND · June 9th, 2009, 11:31

I was using only BBs bastard while I still had my PTW. I spend the whole night why my PTW miss feeding the BBs, I test all 10 mags that I had but none of them are feeding properly until I open a brand new bag of BBs bastard and start testing then then the problem solved. I was using the new PTW mag which come along with my M4A1 CQB 2008 MAX, and buy extra 9 more which are the same.

My suggestion for you is to test another kind of BBs and if it still doesn't work then you might want to crack open a few and clean it up then let see if it work. This way, you can knew the result, if that solution work then you can just simply crack open all of them.

The easy way is buy more mag like I do.

KND

LeGROS · June 9th, 2009, 11:36

Got that trouble with few mag, and I'm using Ksc... I resolve the trouble by a good cleanning and silicone oil in the mag! Don't forget to do not put more than 120 bb's to avoid dammage to the spring!

Crunchmeister · June 9th, 2009, 11:39

Just for shits and giggles, try some Bastards if you have them and see if you have any luck with them. I have the hardest time getting both Madbull .28 (haven't tried their other weights) and KSC / VA of any weight to feed in many of my mags. Seems that I have the same symptom as you. Generally (at least in the P90), semi or shorts bursts are ok. But in longer auto burts, they stop feeding, I remove the mag, and can see the next BB a bit down the feed path. I give the mag a tap, and it's good to go again.

The only BBs I've tried that will feed reliably every time in my AK and P90 mags are Bastards.

Brodie_BHD · June 9th, 2009, 12:06

Ive had only 1 chopped KSC .30 BB out of probably 100 mags of gaming and testing. Not one of my Systema mags has feeding issues.... I just make sure to remove all the BB's at the end of a game day and store them with no tension on the springs, similar to what you would do with an AEG spring.

Nacchi · June 9th, 2009, 12:07

I don't know how you feel about semi transparent plastic mags but I hear the Lancer L5 mags are good.

Personnaly I have the same problem as you with three of my seven mags down. Mine are the older 80 rounder though.

I have one sacrificial mag that kept missfeeding like yours last year and I cleaned it using a jet of water into the BB hole (I know water, airsoft, PTW) quickly dry it and sili oil after and that mag is still working, one year later. Probably not the best way to clear it but seems to work.

m102404 · June 9th, 2009, 13:32

Thanks guys...

The bbs dribble out of the "weak" mags...that's why I'm leaning towards the springs just not having the oomph to feed the bbs. Maybe the 0.08gx30 extra weight is just too much for it! LOL

Unless I'm stress testing, I'm only loading 30. The Systema mags are a mix of 80's and 120's...all used. I have no idea how much they were "loved" by the previous owner(s).

I'll strip down the worst of the mags and see what's what inside. If it resurrects the mags...great and I'll check out the others. If not I'll pick up some new ones.

So no one uses the MAG mags here?

Tys

Colin_S · June 9th, 2009, 14:21

Hey Tyson.

I've tried Saber and MAG PTW mags and I still prefer the Systema, they're the only ones that feed properly with my gun. MAG are ok though I find you have to modify the latch that engages the bolt catch as it's too thick and will stop your gun from firing even when it's not empty. Also don't load the full 170 rounds (not sure if you woudl), that causes the gun to chop like crazy. ~120-130 rounds worked well for me but I sold them and stuck with Systema myself.

I'm not sure about yours but I know my gun will not work with Madbull BBs, I use BB Bastards exclusively and do not have any misfeeding/chopping issues.

When you take apart the Systema mags you have to be careful because the clamshell halves are glued together. If you try to pull them apart, it's possible you may snap one of the halves and render the mag useless. I used an precision screw driver to pry the two sides apart. Also Systema uses two springs separated by a piece of plastic inside the mag, don't lose that otherwise the springs will tangle. Oh ya I guess watch out for the bolt catch levers and rods, those tend to go flying when you open your mag too.

I think that's it, hopefully it helps.

m102404 · June 9th, 2009, 14:28

I'll try BBbastards as well...shame 'cause I'm sitting on several thousand of Madbulls...LOL!

I'll give it a shot with the worst of the mags. I watched a couple of youtube vids of the disassembly...I see what you're talking about.

Maybe I'll do it in a big clear baggie to catch all the flying bits...I hate taking mags apart, and this one seems like 4x as many parts.

Thanks!

Tys

MadMax · June 9th, 2009, 14:30

I find that the PTW doublestack scheme is a little bit dirt intolerant. A bit of dust contamination in your mag and things get a little sticky with the mag feeding. The only solution I've found is complete disassembly and blowing it out with compressed air. If you're only going to load 30rnds, you can afford to increase the preload at the far end of the spring. Maybe you can stuff something to push the spring guide forward and increase the spring preload for your 30rnds which are currently at the lowest force end of the spring.

m102404 · June 9th, 2009, 14:38

Thanks Carl,

I was going to try something like that when I got 'er open. I'm thinking that I'll either pin it or whittle something up on the lathe to increase the tension. Depending on the spring size/config, I've got some junker mags that I can butcher as well.

Ideally, I'd end up with a mag than can load 30 and up to 80-90 without crushing the sping.

I'll see if I can work up some measurements for how much space I'll need to retain that capacity+compressed spring. In the end I suppose it'll be guesswork and testing.

(if I wasn't such a stingy bastard, I'd just buy new mags...but I can't let anything broken sit...

)

Cheers,

Tys

swatt13 · June 9th, 2009, 14:55

Quote:

Originally Posted by m102404

I'm using new Madbull 0.28's primarily. KSC 0.20's as well...but that's more for testing.

Like I said, feeding from some mags is fine...semi auto. In some of the used/old Systema mags...semi isn't reliable. In two of the Systemas...semi is fine, full auto is a no-go. In 4 of the Sabers...semi is fine and full auto is ok.

What mags/bbs do you use?

my whole club has been through this, unfortunalty is the madbull bbs. i gurantee you if you grab a bag of .28 bbb and try it, that will rectify all your problems. madbulls are slightly oversized and have a waxy finish. you can actually feel a difference between the two brands, madbulls feel... waxy, but you actually dont notice it untill to grab some bbb's they are so polished they feel like theyre covered in oil. madbulls are great bbs for aegs, but unfirtunatly no good for ptws. bbb are the only way to go. now ptws also had a bad run of mags that the springs would weaken in them, so you may still need to bust the problematic ones open and stretch your springs, not fun, but its the only way to fix em... do NOT put silicone into the mags to try and lube the channel

m102404 · June 9th, 2009, 15:01

Bursting my bubble hopes of fixing these...

LOL

I'll dig out some BBBastards (I think all I have left are 2-3 bags of 0.25g) and give them a whirl before I take apart any mags (I'll probably still take one apart just for the hell of it).

I'm running a black M90 (320fps) and a m110 spring (380fps)...with a Supermax motor, '08 electronics and a new 9.6v battery. ROF is pretty quick and I suppose that's not helping things. But regardless...once I get this feeding issue sorted out I should be able to reliably shoot full auto.

Mind you....semi auto on such a quick trigger is pretty damn fast as it is.

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June 9th, 2009, 10:59	#1
m102404 Tys Trader rating Join Date: Apr 2006 Location: Toronto	PTW Mags I've got a bunch of PTW mags and a couple of them are not feeding too well. The rifle itself works just fine. With the "problem" mags, they don't seem to feed (i.e. if i notice a misfeed and drop the mag, I can see the next bb down in the feed path). If I tap the mag, the bbs will jump up into position. A shot or two...then the same thing. They're used...unknown how much/etc... Regardless...some of the other mags don't feed quite fast enough either. They work perfectly in semi...shot after shot for the entire mag. But in Full auto...I'll get chopped BBs. The new Saber mags work much better semi/full...so it gives confidence that it's not the PTW. I do notice that the spring force of these mags are much stronger than the used Systema ones. So, I'm going to take the worst of the bunch apart, clean them out, see if I can't fiddle with the spring, etc... But to scope it out in advance...what mags are you guys using? I have a couple of Saber mags and they seem to work ok. How about MAG mags, Boom mags? Are there any others that are solid alternatives. I don't think that I'll go the route of PMags...don't really care for that look. I get the realism of "real" metal AR mags...but the lighter/cheaper alternatives are attractive. Opinions? Order new springs for the existing mags? Just buy new ones? Buy more Saber/other? Thanks, Tys Last edited by m102404; June 9th, 2009 at 11:02..

June 9th, 2009, 11:09	#2
KND * AV revoked * Trader rating Join Date: Apr 2008 Location: Downtown Montreal	Would you mind if I ask you what BBs do you use ? I counter a lots of BBs that don't feed with my PTW and only one brand that feed perfectly. KND __________________

June 9th, 2009, 11:31	#4
KND * AV revoked * Trader rating Join Date: Apr 2008 Location: Downtown Montreal	I was using only BBs bastard while I still had my PTW. I spend the whole night why my PTW miss feeding the BBs, I test all 10 mags that I had but none of them are feeding properly until I open a brand new bag of BBs bastard and start testing then then the problem solved. I was using the new PTW mag which come along with my M4A1 CQB 2008 MAX, and buy extra 9 more which are the same. My suggestion for you is to test another kind of BBs and if it still doesn't work then you might want to crack open a few and clean it up then let see if it work. This way, you can knew the result, if that solution work then you can just simply crack open all of them. The easy way is buy more mag like I do. KND __________________

June 9th, 2009, 11:22	#3
m102404 Tys Trader rating Join Date: Apr 2006 Location: Toronto	I'm using new Madbull 0.28's primarily. KSC 0.20's as well...but that's more for testing. Like I said, feeding from some mags is fine...semi auto. In some of the used/old Systema mags...semi isn't reliable. In two of the Systemas...semi is fine, full auto is a no-go. In 4 of the Sabers...semi is fine and full auto is ok. What mags/bbs do you use?

June 9th, 2009, 11:36	#5
LeGROS Trader rating Join Date: Jul 2007 Location: back on 15 of April!!!... Viva Cuba!!	Got that trouble with few mag, and I'm using Ksc... I resolve the trouble by a good cleanning and silicone oil in the mag! Don't forget to do not put more than 120 bb's to avoid dammage to the spring! __________________ ALPHA unit, because there is no one else for that job!

June 9th, 2009, 11:39	#6
Crunchmeister Trader rating Join Date: Nov 2007 Location: In your bedroom going though your underwear drawer	Just for shits and giggles, try some Bastards if you have them and see if you have any luck with them. I have the hardest time getting both Madbull .28 (haven't tried their other weights) and KSC / VA of any weight to feed in many of my mags. Seems that I have the same symptom as you. Generally (at least in the P90), semi or shorts bursts are ok. But in longer auto burts, they stop feeding, I remove the mag, and can see the next BB a bit down the feed path. I give the mag a tap, and it's good to go again. The only BBs I've tried that will feed reliably every time in my AK and P90 mags are Bastards. __________________

June 9th, 2009, 12:06	#7
Brodie_BHD Trader rating Join Date: Mar 2007 Location: Victoria	Ive had only 1 chopped KSC .30 BB out of probably 100 mags of gaming and testing. Not one of my Systema mags has feeding issues.... I just make sure to remove all the BB's at the end of a game day and store them with no tension on the springs, similar to what you would do with an AEG spring. __________________ Happiness comes from belt fed weapons! -------------------------- SIR - South Island Rangers

June 9th, 2009, 12:07	#8
Nacchi Trader rating Join Date: Jul 2006 Location: Toronto	I don't know how you feel about semi transparent plastic mags but I hear the Lancer L5 mags are good. Personnaly I have the same problem as you with three of my seven mags down. Mine are the older 80 rounder though. I have one sacrificial mag that kept missfeeding like yours last year and I cleaned it using a jet of water into the BB hole (I know water, airsoft, PTW) quickly dry it and sili oil after and that mag is still working, one year later. Probably not the best way to clear it but seems to work. __________________ Team GHOSTS - Fides et Amicitia

June 9th, 2009, 13:32	#9
m102404 Tys Trader rating Join Date: Apr 2006 Location: Toronto	Thanks guys... The bbs dribble out of the "weak" mags...that's why I'm leaning towards the springs just not having the oomph to feed the bbs. Maybe the 0.08gx30 extra weight is just too much for it! LOL Unless I'm stress testing, I'm only loading 30. The Systema mags are a mix of 80's and 120's...all used. I have no idea how much they were "loved" by the previous owner(s). I'll strip down the worst of the mags and see what's what inside. If it resurrects the mags...great and I'll check out the others. If not I'll pick up some new ones. So no one uses the MAG mags here? Tys

June 9th, 2009, 14:21	#10
Colin_S Trader rating Join Date: Jul 2004 Location: Toronto, Ontario	Hey Tyson. I've tried Saber and MAG PTW mags and I still prefer the Systema, they're the only ones that feed properly with my gun. MAG are ok though I find you have to modify the latch that engages the bolt catch as it's too thick and will stop your gun from firing even when it's not empty. Also don't load the full 170 rounds (not sure if you woudl), that causes the gun to chop like crazy. ~120-130 rounds worked well for me but I sold them and stuck with Systema myself. I'm not sure about yours but I know my gun will not work with Madbull BBs, I use BB Bastards exclusively and do not have any misfeeding/chopping issues. When you take apart the Systema mags you have to be careful because the clamshell halves are glued together. If you try to pull them apart, it's possible you may snap one of the halves and render the mag useless. I used an precision screw driver to pry the two sides apart. Also Systema uses two springs separated by a piece of plastic inside the mag, don't lose that otherwise the springs will tangle. Oh ya I guess watch out for the bolt catch levers and rods, those tend to go flying when you open your mag too. I think that's it, hopefully it helps. __________________ Team GHOSTS - Fides et Amicitia Blog: http://www.colinsun.com G-45

June 9th, 2009, 14:28	#11
m102404 Tys Trader rating Join Date: Apr 2006 Location: Toronto	I'll try BBbastards as well...shame 'cause I'm sitting on several thousand of Madbulls...LOL! I'll give it a shot with the worst of the mags. I watched a couple of youtube vids of the disassembly...I see what you're talking about. Maybe I'll do it in a big clear baggie to catch all the flying bits...I hate taking mags apart, and this one seems like 4x as many parts. Thanks! Tys

June 9th, 2009, 14:30	#12
MadMax Delierious Designer of Dastardly Detonations Trader rating Join Date: Dec 2001 Location: in the dark recesses of some metal chip filled machine shop	I find that the PTW doublestack scheme is a little bit dirt intolerant. A bit of dust contamination in your mag and things get a little sticky with the mag feeding. The only solution I've found is complete disassembly and blowing it out with compressed air. If you're only going to load 30rnds, you can afford to increase the preload at the far end of the spring. Maybe you can stuff something to push the spring guide forward and increase the spring preload for your 30rnds which are currently at the lowest force end of the spring. __________________ Want nearly free GBB gas?

June 9th, 2009, 14:38	#13
m102404 Tys Trader rating Join Date: Apr 2006 Location: Toronto	Thanks Carl, I was going to try something like that when I got 'er open. I'm thinking that I'll either pin it or whittle something up on the lathe to increase the tension. Depending on the spring size/config, I've got some junker mags that I can butcher as well. Ideally, I'd end up with a mag than can load 30 and up to 80-90 without crushing the sping. I'll see if I can work up some measurements for how much space I'll need to retain that capacity+compressed spring. In the end I suppose it'll be guesswork and testing. (if I wasn't such a stingy bastard, I'd just buy new mags...but I can't let anything broken sit...) Cheers, Tys

June 9th, 2009, 15:01	#15
m102404 Tys Trader rating Join Date: Apr 2006 Location: Toronto	Bursting my bubble hopes of fixing these... LOL I'll dig out some BBBastards (I think all I have left are 2-3 bags of 0.25g) and give them a whirl before I take apart any mags (I'll probably still take one apart just for the hell of it). I'm running a black M90 (320fps) and a m110 spring (380fps)...with a Supermax motor, '08 electronics and a new 9.6v battery. ROF is pretty quick and I suppose that's not helping things. But regardless...once I get this feeding issue sorted out I should be able to reliably shoot full auto. Mind you....semi auto on such a quick trigger is pretty damn fast as it is.

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