Quoted: I had an older AR do that. The disconnector was going TU. It may not be bump firing.
|
With the RRA 2 stage, some have a very short "reset" distance back to the first stage. That coupled with a very light 2nd stage, and you have a "bump-o-matic" on your hands. The 2nd round is always very close to my original "group", but the 3rd round is usually off the paper.
I watched a 3-gun shooter throw away a huge number of shots at the Texas 3-gun match last fall, and everyone there claimed his rifle "was safe".
His "hit ratio" was probably the worst recorded that day.During (free) recoil, the rifle starts rearward while your finger remains stationary. After recoiling, the bolt then closes, causing the rifle to jump slightly forward(or perhaps has "bounced off your shoulder"). but you finger is still there, and a second and or third shot can be fired. Armalite has a tech note about this happening.
Pulling the trigger firmly to the rear, and HOLDING it rearward during the recoil cycle is the cure. HTH.
Paladin