A waste of money, don't buy - Mimtac AR-15 Mil-Spec Trigger

Contrary to good reviews I saw about this item on a Brownell's website perhaps, this drop in trigger assembly once installed by a competent gunsmith, was terrible. The MIM metal pieces did not reset well at all and were not a clean break. Also unduly heavy. The original Springfield Armory trigger that came with my AR rifle was better.
I took it out and replaced it with a Timney Impact 3-5 AR unit which was a hundred dollars more but will worth the extra money. Better than a Giselle trigger. Deciding whether to purchase two more of the Timney for other ARs.