Rudy,

I picked up a 16" D/I upper back when I was down in NJ, which I'm looking to SBR the lower it is attached to (switched out the fixed stock when I got up here, and running your magazines in it). Just wanted to see if that is something I can have you do.

Was looking to put the barrel just past the end of the forend, which I'll probably measure tonight when I get home to figure out (want to say like 11" to 12" range, if I remember correctly the last time I looked it over), and then thread it to .578x28... as I'll likely get a suppressor in the upcoming year or so. Any issues going shorter with a barrel like that?

Also, reading the SBR regulations for engraving, would it be possible to have you also stamp ".45 ACP" on the barrel so that I can just do the name and location on my lower? Wanted to SBR that lower, as it is still a standard pattern lower... so can swap uppers if desired (after notifying ATF).

Thanks for your time. Hope all is well down there.

The barrel has 6” exposed from the forend... figure leave an inch. Cut to 11”?

fI have one of Ruy' s DI 45 upper with an 11 in barrel Had it several years and it runs great, The DI is a lot better to shoot my boowbaxck subs.

Call me at the shop, we'll work out the details on sending upper in ......Be happy to shorten or rebarrel. We can mark but I don't think it is a requirement they the lower be marked for caliber. As far as .578 x 28 I prefer not to as that allows the nielson device (spring loaded piston) to be used on the rifle. IT WILL MALFUNCTION. I know of no suppressor manufacturers that don't make a 5/8 x 24 fixed suppressor mount for their can. My apologies on the tardy reply....I have been slammed in the shop for a couple of months and just haven't been on line as much as I'd like.

Thanks, Rudy. No big deal on the reply. Been a little busy with work as well, but I should be getting the ATF crap into them somewhat soon. Had a coworker do my fingerprints, so everything is ready to go out. If those measurements work, I'll put the barrel length/OAL down on the Form 1 and submit it.

From what I read, caliber should be marked somewhere... but doesn't need to be on the lower. If its on the barrel... good to go. Wanted to keep it on the barrel, so I could leave the lower unmarked. Any other upper I toss on is going to have the caliber on it, as well.

For the thread pitch, 5/8" works. I was looking into the options, and think I read the similar. Must have just got .578" and 5/8" reversed.

At the moment I have no way to mark the barrel...I'll look into picking up some stamps....If we just 45 on it that should be cool.