Save your money! Use the factory trigger, smooth it down and then grease it! It seems all the other aftermarket triggers out there MAY not pass the 2.5 kg trigger weight test at CFSAC/ NSCC testing procedures!!
Personally, I've won many DCRA gold medals with the factory trigger, just greased up similar to my M14 trigger lubrication techniques seen in my M14 clinics!
Now, here's the voice of authority....I witnessed a civilian shooter whose COLT HBar trigger passed the NSCC/CFSAC trigger testers while he had his score cards signed off near the ammo truck way back in July1999.

Life was good until he shot a 50-?V score. Match procedure tells us that we are escorted to the central trigger weigh station and the Firing Point Officer witnesses your trigger suspending the necessary 2.5kg mss. His trigger FAILED and his scores were disallowed!
This procedure has happened to me a few times, and yes... at the national level!
Back to the story... He was pissed. WTF went wrong ? WTF could have gone screwy?
His trigger barely held the weight BEFORE that match. AFTER that match, the lubrication and other unseen variables worked to disable his trigger's ability to hold up that 2.5 kg test mass. YES, he did tell me that his trigger WAS lightened! Enough to pass the test when the rifle was COLD! Who would have thought about that trigger failing when the rifle heated up?
You can jump on me and flame me all you would like, but I was ONE of a very FEW civvies THERE! And that's the voice of the shxt sandwich!!
I compete with a factory trigger! Nothing fancy! If you ain't convinced, then some Queen's Medal winners (and CF Bisley shooters) reading this can/better back me up, 'cause their C7A1/2 triggers ain't lightened!!
Peace out!