Long story short, I built an AR-15, Bolt carrier group is a spikes tactical. Upper was assembled and purchased that way. Trigger springs are installed correctly.
I was shooting a box of federal .223 and had 1 round out of about 10 go off, the rest had medium to light primer strikes and all FTF.
This is my first AR, what the hell is going on here?
from the looks of my bolt it doesnt really look like the firing pin protrudes very far when I push it with my finger. Could Spikes Tactical have given me a faulty piece of crap firing pin? What else could it be?
Please help me AR-15 gurus, I have no shame, so if its an F up on my part assembling it I will own it. That being said the lower is a DPMS kit, and I do know that the hammer spring is in fact installed correctly.
Most likely culprits
1. Did you install the hammer spring correctly? Take apart and look closely. The loop in the spring should be pointing backwards
2. Did you install the disconnector spring correctly? The disconnector spring has a fat end on it. The fat end goes INto the trigger, a lot of people install it wrong.
I don't think your firing pin is at fault, i'm thinking install of the LPK is wrong.