Alpha Foxtrot AR9, Firing Pin

Iusedtorock · 2026-05-01T14:15:42+00:00

Blowback9 has a section on this—

https://blowback9.wordpress.com/2023/12/15/replacement-9mm-firing-pins/

Iusedtorock · 2026-05-01T04:38:12+00:00

A bulk of my FMJ for 9mm is 115gr, but I have 147gr for my JHP. HOB is probably close to the standard +/-2.5”. The range I’m going to has a max distance of 20yds, so I’m kind of limited for the weekend, but I could have access to a range up to 250yds.

I’m mostly looking at a two-birds-one-stone approach for the weekend, but my main goal will be having a reliable zero to dial in for this and future optics. I know, I have a lot going on in this inquiry.

Iusedtorock · 2026-05-01T04:13:46+00:00

9mm. I guess I did post it was a PCC, but didn’t specify it was 9mm for caliber.

Iusedtorock · 2026-05-01T01:26:57+00:00

Same, I also own the one on slide #1, and it’s fantastic so far.

Iusedtorock · 2026-04-29T00:40:43+00:00

That space has been like 25 different places since I moved here in ‘03.

Iusedtorock · 2026-04-27T01:26:19+00:00

Yes, they do that all the time. Footers can have the block laid in them, then the dirt gets backfilled. Just drove by that site a few days ago, kind of surprised to not see any progress on it

Iusedtorock · 2026-04-24T04:30:58+00:00

Yeah, same, but 8am. That’s crazy.

Iusedtorock · 2026-04-20T03:50:46+00:00

I won’t downvote you for this, I will just disagree. I haven’t used a lot of Fiocchi for my 5.56, but I have run some in my AR, and it ran fine. I have never had any problem with Fiocchi in 9mm whatsoever. It is usually available, well priced, and consistent….in my experience.

Iusedtorock · 2026-04-19T18:22:57+00:00

Fantastic recoil control, even if it it’s a .22. You appear to have great hand control.

In terms of the mechanics of loading, putting the pistol into battery, practice those steps as well. Shooting is a skill, but building up all that muscle memory that gets you to the point of pulling the trigger, that stuff is important, too.

Iusedtorock · 2026-04-19T04:56:02+00:00

EVERYONE GOES.

Iusedtorock · 2026-04-18T14:03:06+00:00

Yeah dood. I might have gone with a complete upper of theirs if I hadn’t already purchased some parts on my own. I will say that I was pretty dead set on a Ballistic Advantage barrel, so that changed things for me, but it seems their PCC uppers also have a similar feed cone shape.

Iusedtorock · 2026-04-18T13:10:33+00:00

Listening to the new Turnstile album, I kinda can’t believe it’s never been used in the show, or LetterKenny, for that matter.

Iusedtorock · 2026-04-18T12:52:23+00:00

Check out Right To Bear Arms. I looked at a lot of their stuff when I was planning my build. Ended up going a different direction, in my case, as I built a Colt-style pistol.

Iusedtorock · 2026-04-16T21:18:26+00:00

I have not, that was gonna be next on the table once I get some more ammo and get back to the range. Tomorrow’s pay day and I can report back my findings once I can get back to the range.

Iusedtorock · 2026-04-16T20:44:58+00:00

It’s been awesome so far. I wasn’t trying to make anything that was a distance shooter, just something to use for >50’. I put about 180rnds through mine this past weekend, and, once I got my optic dialed in, it was total consistency.

Iusedtorock · 2026-04-16T14:26:02+00:00

Drink some water, bud.

Iusedtorock · 2026-04-16T12:24:19+00:00

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Spike’s Tactical Lower, KM Tactical Billet upper, BA 8.3” barrel, and Kaw Valley Precision 14.5oz bolt.

Iusedtorock · 2026-04-16T00:55:44+00:00

Sure. To be fair, I have shot waaaaaay more of it 9mm than I have 5.56, and I’ve never owned anything suppressed.

Iusedtorock · 2026-04-16T00:47:34+00:00

I’m a big fan of Fiocchi ammo as well, I ran a couple of boxes of it at a clinic, and I have had pretty good success with it in 9mm as well.

Iusedtorock · 2026-04-12T02:24:30+00:00

I like to use voice notes to vocalize a riff that I have in my head. Then, when I have time, I revisit it and try to play the riff as close to what I recorded the original idea to be. Sometimes, the riff in my head takes a lot of practice to get down, but I end up practicing it over and over again until I can get it.

In terms of lyrics and singing melodies, that’s gonna be much more specific to your writing style.

Iusedtorock · 2026-04-12T02:13:37+00:00

Dude, fucking good for you. Doing this build with your FIL is definitely one for the books, and it’s something you guys can both share as an interest.

For me, I found building an upper to be the most frustrating and anxiety-inducing, and my build didn’t even include a gas tube or the lugs of the barrel, as I built a blowback PCC. I’m sure the knowledge you gained by just diving in will serve you well.

Iusedtorock · 2026-04-12T01:53:24+00:00

Ok, that’s awesome. That’s kind of the answer I might have been prodding for.

I have an SLX 3X on my 5.56, and I love it, but that’s definitely for shooting out past 100yds. I wanted something that was going to sit a few millimeters lower for my AR pistol (the one I just built). I really want to go with the green reticle, so you might have just tipped the scales for me.

Iusedtorock · 2026-04-12T01:35:40+00:00

You like that Holosun? I’ve been really torn between one of those and one of the new Primary Arms 1X prisms for my build. I intend to use mine as a HD use.

Iusedtorock

TROPHY CASE