dylanrutan
Alpha
Blue box production model M45A1. Crazy to think the era of the 1911s service is over
Picked up my brand new Colt M45A1 today from my local FFL and took it straight to the range. I brought 400 rounds of Winchester White Box 230gr FMJ and grabbed four Wilson Combat 47D 8-round mags while I was there.
On the third mag fired through the gun, I experienced five consecutive failures to fire.
After that string, the gun ran the remaining ~350 rounds without any additional stoppages.
Thoughts on Cause
My initial thought was maybe something related to the Series 80 firing pin safety breaking in.
However, what’s confusing:
Magazine Fitment (Wilson 47D)
The Wilson 47D mags were very tight on insertion.
Aside from the early failure-to-fire string and the Novak rear sight set screw backing out at the range, the gun ran the remaining rounds without issue.
Great shooter overall and a very cool piece of recent USMC history.
Appreciate any input—especially from those with more time on Series 80 Colts.
Picked up my brand new Colt M45A1 today from my local FFL and took it straight to the range. I brought 400 rounds of Winchester White Box 230gr FMJ and grabbed four Wilson Combat 47D 8-round mags while I was there.
On the third mag fired through the gun, I experienced five consecutive failures to fire.
- On failures #1–2:
- Performed immediate action
- Confirmed a round was ejected each time
- On failures #3–5:
- Carefully ejected each round
- Inspected primers and found no indentation at all
- Slide appeared fully in battery
- I palm-struck the rear of the slide anyway to rule out out-of-battery
- Re-engaged/disengaged safety and attempted to fire again
After that string, the gun ran the remaining ~350 rounds without any additional stoppages.
Thoughts on Cause
My initial thought was maybe something related to the Series 80 firing pin safety breaking in.
However, what’s confusing:
- The hammer was dropping
- But the firing pin clearly wasn’t reaching the primer
- Possible intermittent failure of the firing pin block to disengage
- Or something binding in the firing pin / plunger system early on
Magazine Fitment (Wilson 47D)
The Wilson 47D mags were very tight on insertion.
- Would not seat easily under a closed slide
- Required aggressively slapping the baseplate
- Or depressing the mag release to insert
- New mag catch + new mags needing break-in
- Possibly slightly tight tolerances on the frame
Aside from the early failure-to-fire string and the Novak rear sight set screw backing out at the range, the gun ran the remaining rounds without issue.
Great shooter overall and a very cool piece of recent USMC history.
Appreciate any input—especially from those with more time on Series 80 Colts.