Heavy trigger spring

[Lock-n-load]

Anyone put  this in to increase single action trigger a little? Got a cajonized spo1 tatical ,smooth as glass 3.0 trigger ,without much of a wall.would like to increase sao trigger to 4lb with a stronger wall.

[Fuzzy Sights]

I would suggest a stronger sear spring.

JW

[azdover]

I was trying to do the same thing on a steel P-01 manual safety I converted to SAO.  After the conversion, I wound up with a 3# trigger pull with the factory TRS installed.  One poster suggested bending the TRS legs but he didn't elaborate how. 

I replaced the original with a CZC heavy TRS but that increased the pull to about 5#.  I was able to reduce the pull to 4.5# by increasing the angle between the legs to about 60 degrees, which seems to reduce the TRS tension between the frame and trigger.  The picture below shows - top to bottom - a CZC heavy TRS before install, a heavy CZC heavy TRS after install (resulted in the 5# trigger pull and took a set of about 45 degrees), and the original factory TRS (3# pull).  The green line on the middle TRS shows how much further I adjusted the legs.  I didn't actually bend the legs themselves.  I inserted an appropriate size rod (the smooth end of a drill bit works) into the coil of the spring and used two sets of pliers to tighten the TRS coil a little to increase the angle between the legs.

I think the poster was suggesting that by reducing the angle between the legs on the lighter factory TRS (the bottom one with the red line), you might be able to increase the tension between the frame and trigger resulting in a heavier trigger pull by loosening or unwinding the TRS coil slightly.  This seems to be your quickest option if you don't already have a heavy TRS. 

Here's the link to my original post on increasing trigger weight if you're interested - https://czfirearms.us/index.php?topic=117005.msg910988#msg910988

Hope this helps,
Pete

[Lock-n-load]

Thanks! Expiremints will commence