Has anyone tried out one of these triggers on a Sport II? Optics Planet has them on sale right now for $51 shipped with code TRIG14. I have read a lot of positive reviews for them on other AR's.

Also, can anyone tell me if the safety needs to be removed on a Sport II when changing out the fire control group?

Thanks!

I have no experience with that trigger, but I can tell you it is not difficult to do. Replacement of the trigger group is really just a few minute job. It's not the Chinese finger puzzle it appears to be.

Here's a video that might help:

If you like instructions better:
Shooting Illustrated | AR Lower-Receiver Build: Trigger Group Installation

Really, a 5/32 punch and a small hammer you got this. I installed an RTB enhanced trigger group last week in my bathrobe on the sofa. No vise, no laser tools, just a place to keep the parts where they aren't dancing away and you are good to go.

Selector switch can remain. Just put it in the "fire" position.

I have replaced a couple of dozen AR triggers and trigger spring sets, with JP Springs and never once, have I had to remove the safety. There is plenty of room.

For not much more, you can get this trigger:
Blackhawk 71TG02 AR Blaze SSD Trigger AR-15 Steel | 20% Off w/ Free Shipping

I have it and it breaks like glass at just over 4 pounds. It never needs lubrication, as it's infused with nickel boron.

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