M&P 15-22

[Nelly2014]

As part of on-going improvements I fitted a JARD trigger a few months back. Not long after I began experiencing intermittent FTF's and suspected a set-up issue around the trigger area but I could find no fault.
This has gone on for a while and I was looking at ammo, mags, everything. Today by chance I had an opportunity to examine another 15-22 and noticed that the firing pin on mine appeared to be 'free-floating' compared to the other.
So it appears I have been using the rifle for ages with a broken firing pin.
What amazes me is that apart from a few stoppages the rifle has continued to give good service and even shot complete 25-40 sections with no FTF's. Good gun.
I obtained a new pin and fitted it this evening.
Hope it doesn't break again, I'll have to get some spares.

[BamBam]

Maybe your hammer spring is a bit fierce and broke the pin. Thousands of rounds with CMC trigger in 15-22 with no issues.

[Blackstuff]

If you go on the S&W forum this appears to be quite common but intermittent if you know what I mean A fair few people have reported it but they're still in the vast minority....There didn't really be a common factor for people reporting broken pins though

Out of curiosity, where did you get the firing pin from? I know EMRR had them for a while but they've been out of stock for a while.

[BamBam]

I wonder if ammo selection is a contributing factor. Shooters who favour HV ammo seem to suffer more failures than those who prefer Standard Velocity for example.

[Blackstuff]

I only use CCI Mini-mag or Federal Gameshok in mine which I think are considered high velocity and mines been fine so far. In fairness though its only had about 2-3000rds through it so far

[Nelly2014]

If you go on the S&W forum this appears to be quite common but intermittent if you know what I mean A fair few people have reported it but they're still in the vast minority....There didn't really be a common factor for people reporting broken pins though

Out of curiosity, where did you get the firing pin from? I know EMRR had them for a while but they've been out of stock for a while.

A chap I know at the club gave me one of his spares.
I use Blazer or Federal.
I do wonder if I should put the original hammer spring back in as the one fitted now was in the kit.

[Blackstuff]

Might as well give it a try. If the gun still fires reliably just leave it in there and see if you have any more breakages. If not happy days, if it does break time to keep looking

[Nelly2014]

Shot a couple of hundred rounds at the range last night. After a couple of hiccups and adjustments I was at last able to fully appreciate how good the JARD trigger is, so light and at the same time positive. You can fire so fast it seems like a slow full auto.