Macarbo trigger spring?

[cabelasken]

I've used 3 of them so far and they work perfectly..

 

[VALKYRIETP]

Lets get this wrong information corrected. The name of the company is M*CARBO
https://www.mcarbo.com/
T.P.

 

[Byrdman13]

Put one in my x bolt as well. Made a big difference with little difference on the pocketbook.

 

[marksman1941]

I have 4 of them in a bolts. Huge upgrade over factory, absolutely safe and reliable