I took my new 450 Bushmaster out to a range and attempted to zero it with a knock-off EOTech sight. No luck, it kept hitting way left and and the battery compartment kept coming open.
I bought a set of UTG iron sights (for now). I went to the range again. Same thing happened, I kept hitting to the left.
I sent the upper back to Bushmaster and they say it is fine.
I went to the range again. I hit two rounds about 2 inches left of aim at 10 yards and then my rifle stopped ejecting cartridges. I have a new ejector and hope to have it installed this week.
I must be doing something wrong, but I can't imagine what it is. Any ideas? Suggestions?