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Old 02-10-2017, 10:56 AM   #1
M70Yugo
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Default Adjustable gas block PSL

What do y'all think about going with a adjustable gas block for a PSL is it really needed?
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Old 02-10-2017, 11:02 AM   #2
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I have one with an adjustable gas block and one with the set screw mod. Once the adjustment is made, you will probably not adjust it again so the set screw setup makes more sense.

jump to post 43 here: http://www.akfiles.com/forums/showth...=PSL+set+screw
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Last edited by Holescreek; 02-10-2017 at 11:15 AM.
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Old 02-10-2017, 12:24 PM   #3
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Ok great thank you for the info Holescreek
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Old 02-14-2017, 06:30 PM   #4
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Whats wrong with using the original gas block? Also is everyone using around 148gr bullets?
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Old 02-14-2017, 08:12 PM   #5
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Quote:
Originally Posted by Young_Machinist View Post
Whats wrong with using the original gas block? Also is everyone using around 148gr bullets?
The set screw mod uses the original gas block. I have this mod on two of my PSLs and have no qualms shooting 174gr bullets, esp for HLs. The ejection pattern is consistent dropping the brass neatly just to my right with no molestation to the brass (except for minor extractor dings on the rim). With 174gr SMk bullets and patiently paced shooting I more than not get 1MOA or better and good reliable precision.
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Old 02-14-2017, 11:18 PM   #6
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Quote:
Originally Posted by Young_Machinist View Post
Whats wrong with using the original gas block? Also is everyone using around 148gr bullets?
Yes 148gr.

The original HUGE oriface is way over gassed for the known weak recoil spring on most PSL's. If you are throwing empty cases more than a few feet, you are over gassed and your gun will perform better with a reduced oriface.
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The PSL is like a 1970 ss396 Chevelle. Not really rare, not too fast, turns and stops like crap - but still a classic everyone wants
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Old 02-14-2017, 11:47 PM   #7
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Quote:
Originally Posted by M70Yugo View Post
What do y'all think about going with a adjustable gas block for a PSL is it really needed?
Are you having problems with light ball or you want to shoot heavier or you are worried about spring loosing strength?
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Old 02-15-2017, 12:03 AM   #8
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But wouldn't it make more sense to say it's intentionally gassed hot to ensure reliability and the recoil spring most likely needs changing out after X amount of rounds? Also I have noticed my PSL which needed a replacement "used" spring out the box, does not like some light ball like Czech silver tip. It's just a tad to hot. Some commercial is noticeably hotter than surplus my psl seems to be more suited for. Russian, Hungarian and Bulgarian, bulgarian being the preferred, does not hassle the overgrown AK action and conservative receiver.

But I digress, it's seen the battlefield in many many places and done its job, same parts as ours...

I just bought replacement spring assemblies. They aren't all worn slap out..

You guys rifles and if you can do the mod go for it...
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Old 02-15-2017, 12:50 AM   #9
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Thanks you guys are always great with info. Has anyone shot 200gr? and im getting that I should most likely do the screw mod with the barrel and gas block. Also just got the Texas weapon gen 2 psl dog leg rail hoping thats great too.
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Old 02-15-2017, 07:29 PM   #10
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Quote:
Originally Posted by nuckldust View Post
But wouldn't it make more sense to say it's intentionally gassed hot to ensure reliability and the recoil spring most likely needs changing out after X amount of rounds? Also I have noticed my PSL which needed a replacement "used" spring out the box, does not like some light ball like Czech silver tip. It's just a tad to hot. Some commercial is noticeably hotter than surplus my psl seems to be more suited for. Russian, Hungarian and Bulgarian, bulgarian being the preferred, does not hassle the overgrown AK action and conservative receiver.

But I digress, it's seen the battlefield in many many places and done its job, same parts as ours...

I just bought replacement spring assemblies. They aren't all worn slap out..

You guys rifles and if you can do the mod go for it...
Since there are no NEW replacement recoil springs from any source ... buying a replacement spring is a crap shoot. No way to know whether the spring you get will be better, worse or the same as the spring you already have.
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The PSL is like a 1970 ss396 Chevelle. Not really rare, not too fast, turns and stops like crap - but still a classic everyone wants
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Old 02-15-2017, 07:33 PM   #11
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The set screw is a recommended mod IMHO if you are a shooter. I personally would not venture to shoot as high as 200+ grain, though I have shot a limited amount of 182gr and was not concerned about it.

The mod gives you a much wider variety and selection of ammo to shoot IMHO safely and tames the ridiculously OP gas port.

My PSLs are picky about ammo and will shoot with very respectable accuracy with the right ammo selection. Slug your bore first and go from there. I have two that are .311 bored and like .310 ammo, particularly MFS 174gr. My favorite and main shooter slugs at about .3115 and shoots WPA and Wolf 148gr very well, as well as the HLs I use with SMK 174gr. This former gun also shoots 7N1 and Cz ST very well.

Good luck.
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Old 02-15-2017, 07:36 PM   #12
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Originally Posted by Mark75H View Post
Since there are no NEW replacement recoil springs from any source ... buying a replacement spring is a crap shoot. No way to know whether the spring you get will be better, worse or the same as the spring you already have.
I did experiment with an M14 spring a while back. It is a little shorter and a little heavier, but it works pretty decent if I remember right.

Also, Centerfire Systems has an armorers kit, with the spring assembly and it just went on sale @ $129 https://www.centerfiresystems.com/p-...f15a-128250689
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Old 02-16-2017, 08:22 PM   #13
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I had zero success with std or extra power M14 springs. Put yours in and try it again to refresh your memory.

Armorers kit ... cut up gun ... rolling the dice on another used spring
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The PSL is like a 1970 ss396 Chevelle. Not really rare, not too fast, turns and stops like crap - but still a classic everyone wants
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Old 02-16-2017, 11:15 PM   #14
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Shoot this guy a pm and ask if he will supply a Psl +10% or +20% spring.

http://www.akfiles.com/forums/showthread.php?t=293491
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Old 02-17-2017, 09:13 AM   #15
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His answer is - NO
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Old 02-17-2017, 11:42 AM   #16
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I just on a whim decided to buy a few more psl spring assemblies and grabbed 3 in like 2 weeks. I mean if you want to run heavier ammo just do the mod... no rash of dead PSL's from running the correct ammo. However a fresher spring wouldn't be a bad thing.
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Old 02-17-2017, 11:06 PM   #17
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Mark75H
To bad He doesn't see a market for new standard or custom PSL recoil springs. Not the same market as the AKM spring but still many owners looking to fire heavy ball ammo.

GTR
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Old 02-26-2017, 09:17 PM   #18
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When utilizing the set screw mod what is the recommended starter size for the gas port? It's been a while since I thought about this but it's on deck now so? I have the correct set screws and lots of drill with correct taps. Just not sure where to start size wise
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Old 02-26-2017, 09:44 PM   #19
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.062" through the set screw should put you in good shape. A friend took his out this winter to see if temperature would cause problems and it fired fine.
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Old 02-26-2017, 09:56 PM   #20
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Ok I'll start there. Thanks again ! I appreciate it.
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