Had the same issue yesterday with a new Shield w/ Night Sites jamming back every other round.
My last 2 purchases were Glocks where they say not to clean before shooting to let the lube they add work in so I didn't even think about lubing it first but when I broke it down it was bone dry on the...
Went to the range yesterday and my brand new Shield 9mm was doing this every other round. I broke it down and noticed it was bone dry. I didn't even think to check first, rookie mistake.
I put some CLP on the rails and other contact points and fired about 150 rounds after that without issue, I...