So I have ran an AR platform professionally and not, for over 22 years now. "damn I am old" anyhow, first time this situation happened to me or seen it.
I had a fail to fire two times in a row, first two rounds on the home defense AR. Rifle is on barrel #2 and was #3 ever built out of War Sport Industries before the brand had the GPR and LVOA.
So the why is The firing pin was so sluggish with oil and powder "mud" that it caused a deceleration of the firing pin after a hammer strike.
That's the why, now lets talk about the trouble shooting steps, I think this will be helpful for alot of you all.
Starting gun status: Magazine in, round chambered pointed at a paper target 50yds, selector on SAFE.
Every time I do the the firing pin goes in faster, comes out quicker and by the fourth time its super clean and easy, feels like it should.
Reassemble and the gun went back to running just fine all day long.
So I hope you can learn something fro this.
John
I had a fail to fire two times in a row, first two rounds on the home defense AR. Rifle is on barrel #2 and was #3 ever built out of War Sport Industries before the brand had the GPR and LVOA.
So the why is The firing pin was so sluggish with oil and powder "mud" that it caused a deceleration of the firing pin after a hammer strike.
That's the why, now lets talk about the trouble shooting steps, I think this will be helpful for alot of you all.
Starting gun status: Magazine in, round chambered pointed at a paper target 50yds, selector on SAFE.
- Assume Sight Picture, rotate to FIRE. PRESSSSSSSSS, CLICK.
- Attempt to Place on SAFE, cycle action, observe ammunition with bullet still attached eject
- Cycle step 1 again
- STOP
- Unload magazine.
- Rotate ejection port towards the deck, cycle action, observe ammunition with bullet still attached eject
- Let bolt go home, rotate selector to SAFE
- Separate upper from lower, extract BCG.
- Observe barrel from Chamber side to see the light?
- I do see the light "no barrel blockage"
- Test hammer spring stiffness :"Passed"
- Go to BCG
- Test proper assembly, Lock the bolt to the rear, place finger on the back of the firing pin, does it protrude through the bolt face? "YES"
Every time I do the the firing pin goes in faster, comes out quicker and by the fourth time its super clean and easy, feels like it should.
Reassemble and the gun went back to running just fine all day long.
So I hope you can learn something fro this.
John
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