As you may have read already, my carbine is a marriage of a Colt upper with a 1/7 barrel twist (a gift) and a Bushmaster Mil-Spec. lower and working well except for the trigger. This article is very short but sweet for those who know little about triggers, like me. My AR trigger is an 8.5 pound trigger and bumps and drags like bad chalk on a chalkboard in school, till the sear breaks and the rifle fires. A long range target shooters nightmare!
Grouping at 100 yards is around 1.75 inches and perhaps largely a trigger issue with off the shelf 55 grain ammo. Clearly the trigger needs to be replaced if long range shooting is your goal. I expect sub-moa from this rifle but not with that mill spec. trigger!
Here are 2 youtube video’s I found on-line for you and I to see on Timney Triggers (may test some) and Geiselle triggers of both single and 2 stage types. Cost is around $200 to $300 for these. I am learning just like many of you with a new AR in the gun safe. I make no recommendations here just information as a fellow shooter. As I said, my Carbine has a 1/7 barrel twist making it more of a long range heavy bullet competition rifle. More on that soon.
I have contacted Timney and hopefully we will have some triggers for us to test this spring.