KP31 Suomi Trigger job (Stupid easy)


PDA






tyeo098
February 3, 2013, 02:27 AM
A while ago I had ordered a KP31 Semi-auto Suomi from Centerfire systems.
Took it to the range a few times but the this had 2 major drawbacks:

1) It was heavy as balls!
2) The trigger pull weighed as much as the rifle.

Since I couldn't do anything about #1, I was playing around in the safe and was seeing if I could improve the trigger in anyway. This was everything from replacing the trigger pack with AR/870 parts, re-polishing the surfaces (already did that) to selling the thing.

While I was examining the trigger group I saw the limiting pin that keeps the transfer bar pushed down to a certain extent. If I could increase the diameter of this pin, it would push the transfer bar down further, and reduce the trigger pull!

A few things were tried, and then I wrapped a paper-clip around the pin as it was inserted. and here is the result:
http://i154.photobucket.com/albums/s249/tyeo098/20130203_011534_zpscbe3fe19ee_zps99b4d83e.jpg
http://i154.photobucket.com/albums/s249/tyeo098/20130203_011448_zpsc1a4f8f7.jpg

This reduced the trigger pull weight to about 4 or 5 lbs. Something VERY manageable compared to the 20 or so pounds that it was.

Not many people have this type of rifle, but for those that do, you feel my pain!

If you enjoyed reading about "KP31 Suomi Trigger job (Stupid easy)" here in TheHighRoad.org archive, you'll LOVE our community. Come join TheHighRoad.org today for the full version!
PGT
February 13, 2013, 04:46 PM
any issues after using it? I'm looking at one of these now

If you enjoyed reading about "KP31 Suomi Trigger job (Stupid easy)" here in TheHighRoad.org archive, you'll LOVE our community. Come join TheHighRoad.org today for the full version!