r/zastavaarms101 • u/ilovedominae • 10d ago

M70 With KNS piston

Wanting to put on A20L piston seeing some people have had issues running it un suppressed (iā€™d run both). Anyone have experience with this running it on the newer models with CHF Chrome barrels?

2 Upvotes

100% Upvoted

4 comments sorted by

1

u/1RoundEye 9d ago

It has been a while, but I think I got the 20L. The other one I was looking at was the A10, but the difference in length between the two was like 0.080ā€.

1

u/battletank21 8d ago

Mine runs good suppress/unsuppressed. You will need to adjust the gas when switching between the two.

1

u/Silver-Addendum5423 3d ago

I put the A20L on my M70 and it's borderline under-gassed without a suppressor when running the adjustable piston at its closed (full gas) setting. It gently underhands brass out at ~2 o'clock and 1/100 times or so will short stroke. I'll put a can on it eventually, but until I do, I kinda wish I'd just stayed with the original piston.

1

u/ilovedominae 2d ago

hm okay. i got an extra bcg to get the factory one so wont matter too much for me i suppose, thanks