I own a WBP Jack rifle in 5.56 and while it is a great rifle and shooter, the rifle is pretty over gassed throwing brass 30 + feet. I was considering an adjustable gas piston for it to dampen it beating itself to death but at $160 it's a bit expensive. I found an ALG enhanced recoil spring with great reviews for $12 and gave it a try and it made quite a difference in the rifles recoil and greatly slowed down the rifle self destructing itself. After install I tried it with several different types of ammo and the rifle seems to operate very good. Even lower power PMC 223 functioned and shot just fine in the rifle, now it throws the brass 12 - 15 feet, still a lot but way better than before. I may still buy and install an adjustable piston in the future, but for now this ALG spring has made a big difference in this rifles performance. Anyone else try one of these with success?

Not ALG, but yes, have used custom springs for years now, get mine from a guy on another forum who works for a spring shop and makes AK and PSL springs in his spare time.

Probably a similar spring, ASTM silicon music wire, super high quality stuff, he makes them in +5%, +10%, and +plus 15% power over stock, I run the plus 5%'ers in all my AK's now, they perform wonderfully, softer shooting and stop the carrier from bashing.

This is always my first suggestion to people instead of going to the expense and trouble of an adjustable gas block.

I'm guessing the ALG springs are +10 % stronger than stock, you can definitely feel the difference when charging the rifle. Nice simple inexpensive upgrade and I bought 3 of them as I want to try them in a few different rifles.

Have one but it's in the parts box still. I figured if I ever needed it I'll use it.

Some good discussion in this archived thread from 2019 on this subject:

https://www.ar15.com/forums/AK-47/What-s-YOUR-recommended-service-life-of-a-recoil-spring-for-a-7-62x39-AK-/64-165493/

They are tried and true, I feel they are too strong for most in spec AKs but they work fine. I like the +5% springs too as already mentioned above.

I have several 556 WBPs.  They all get a Wolff or ALG recoil spring.  Only KNS piston I have is in a Galil.

I've always wondered what the OEM spring in the 308 Saiga is. Maybe a really stiff one like the ALG would be good for it.

I’m trying out MCARBO’s spring in my WBP 5.56, haven’t had a chance to shoot it yet though

Is this the files? I’d be interested in a 5%

Yep. Don't know if he's still around,  but his handle was "thisbugger".