I just recently purchased a silencer for my M4. I still have to wait for the checks, etc, but I got the paper work started.

I looked on the ATF's website, but could not find any FAQ that related to my question, although I did find something slightly informative on Bushmaster's webpage.

I have a Bushy M4 with the 14.5" barrel, and the fixed muzzle break. So, I need to buy another barrel. Bushmaster says (on their page) that the ATF considers the muzzle break and barrel the same thing, so in order to be 16" compliant, their combined length must be 16".

Does this hold true for suppressors as well? My suppressor is 8", so could I buy the 11.5" barrel and still be ok and not have to register the weapon as a short barrel rifle? Or does this only hold true if the break/suppressor is permanently attached (like the Izzy break on the 14.5" barrel)?

I was hoping someone had this answered for them by the ATF already, and I didn't need to send than a letter, and wait for a long time for a reply.

Thanks,
H.

in order for it to be legal overall length it has to be permanently attatched and equal to or greater than 16"

With a flash suppressor it must be fixed meening not removable, other wise it has to be registered as an SBR. If you have say, a 11.5'' barrel I would assume its allready registered, otherwise your asking for trouble.

Quoted: in order for it to be legal overall length it has to be permanently attatched and equal to or greater than 16"

Is there any company out there that would permanently attach it, or is it not considered possible to do that within the confines of the law?

Thanks,
H.

Attaching a suppressor probably isnt a good idea being as how they do need regular individual mantanence.

Quoted: Attaching a suppressor probably isnt a good idea being as how they do need regular individual mantanence.

+1 and for lots of other reasons as well.

Quoted: Quoted: Attaching a suppressor probably isnt a good idea being as how they do need regular individual mantanence. +1 and for lots of other reasons as well.

+2

Haplo, what brand of suppressor did you buy, and who's your dealer? I'm in Indiana as well. Stop in and check out the Indiana Forum here on AR15.COM.

Quoted: Haplo, what brand of suppressor did you buy, and who's your dealer? I'm in Indiana as well. Stop in and check out the Indiana Forum here on AR15.COM. hr

I got a Tactical Innovations silencer. This is my first Class 3 anything, so if I bought garbage, I guess I live and learn. :) I don't have it yet, since I just "bought" it yesterday, and still need to take my paperword to the Sheriff's office, then off to the ATF.  The dealer was Class 3 Sales, in LaPorte, IN.

I have one of the 14.5" Bushy Barrels with the fixed Izzy break on the end, so I need to buy another barrel. I assume I could order a barrel from them that is threaded and thats OK now? They list them as pre-ban and post-ban on their website, but that  doesn't apply anymore, correct? I'd rather just buy one threaded, than have to send off a barrel to be threaded.

I was considering doing the paperwork to get my lower approved as an SBR too, since my silencer will add 8" to my gun.

One of my friends has the 22LR upper for his AR15. He said you could use the same barrel (standard 223 barrel) for the 22, but its not as accurate. Is this correct? If so, that in turn would imply that I could use this silencer on my 22s as well, correct?

Thanks for all the info guys,
H.

Quoted: They list them as pre-ban and post-ban on their website, but that  doesn't apply anymore, correct?

Not for Indiana. A few states still have state-level AW bans, but we aren't one of them.

I was considering doing the paperwork to get my lower approved as an SBR too, since my silencer will add 8" to my gun.

You might as well -- it's only $200 more to do so. You could have the Sheriff sign both at the same time.

One of my friends has the 22LR upper for his AR15. He said you could use the same barrel (standard 223 barrel) for the 22, but its not as accurate. Is this correct?

You can use a .22LR conversion kit in your regular .223 barrel (since both are .224"), but a .22LR performs best with a slow twist rate of about 1-in-16". Also, if you shoot a lot of .22LR in a regular .223 barrel, you run the risk of leading up the gas port.

If so, that in turn would imply that I could use this silencer on my 22s as well, correct?

Yes, you could use a .223 suppressor on a .22LR, but not the opposite.

I've been thinking about this.   What this world needs now is a silencer that gloves back over the long izzy that is used to make the 14.5" legal (the SEBR config).   Now that I can't get one, I want one to try this with.   The izzy stays on, just vents into a custom fit silencer.  The SEBR with a custom silencer that slips over the izzy, maybe ties down to the M203 groove, shooting a subsonic fat bullet (maybe tungsten filled) with the 1 in 7" twist could be an engineered marvel for tactical entry.  --ecologically correct, good stopping energy short range, and you could run it without waking the neighbors.  One thing I don't know is if this setup would adversely affect the gas tube dynamics and upset the extract/feed timing.   ---Comments?   Is this just too weird?

Quoted: Quoted: They list them as pre-ban and post-ban on their website, but that  doesn't apply anymore, correct? Not for Indiana. A few states still have state-level AW bans, but we aren't one of them. h=85%

I was considering doing the paperwork to get my lower approved as an SBR too, since my silencer will add 8" to my gun.

You might as well -- it's only $200 more to do so. You could have the Sheriff sign both at the same time. h=85%