does anyone make an aftermarket trigger for this action?

Hard one. Canjar is rumoured to do aftermarket triggers for Sakos, but just getting in touch with Canjar is a feat, let alone getting a product from them. You can do a search here for "Canjar", and a phone number will probably pop up, but don't hold your breath...

Of late I ran into this: Jard Triggers - Coming Soon Page. They list at least some Sako aftermarket trigger parts. BUT, I don't know how far down the line they are with this, nor what the aftermarket trigger (parts) will do. You might want to try to contact them... Jard Inc.

- mike

Shooter65

Timmey makes one also Canjar. It will take about 6 months to get one from Canjar and that's if your lucky. Canjar 303-295-2638 Brownells sells the Timmey part # 883-400-100 http://www.brownells.com/aspx/NS/store/ProductDetail.aspx?p=17045&title=BOLT+ACTION+RIFLE+TRIGGER&s=31688#31688

I have a Timmey for sale if your interested email me at rstanich@arinc.com