The Firing Line Forums

Go Back   The Firing Line Forums > The Hide > NFA Guns and Gear

Thread Tools
Old May 21, 2011, 10:09 PM   #1
Join Date: January 6, 2007
Posts: 24
Expansion chamber- NFA item or no?

So here is a description of the object in question...

Let's say that a rifle with a 10.5" barrel has a 5.5" permanently affixed muzzle extension to being the total length to 16". The muzzle extension is approximately 1.25" wide and the face of it has a hole for the bullet to exit and 4 other holes placed at 90 degree intervals at the edge of the face.

With that description of a theoretical muzzle extension in mind, would it be a suppressor or a linear compensator (e.g. Noveske KX3, Levang, etc.)? Any opinions?
pullnshoot25 is offline  
Old May 22, 2011, 05:08 PM   #2
Nickel Plated
Senior Member
Join Date: January 17, 2010
Location: Brooklyn, NYC
Posts: 572
I believe to be a suppressor it has to be removable and reduce the shot report by 1 decibel.

BTW do integral suppressors count as NFA items? Since they are not removable. Like on an MP5SD.
Nickel Plated is offline  
Old May 22, 2011, 06:45 PM   #3
Willie Lowman
Senior Member
Join Date: March 5, 2009
Location: Uh-Hi-O
Posts: 2,554
"9mm has a very long history of being a pointy little bullet moving quickly" --Sevens
Willie Lowman is offline  
Old May 22, 2011, 10:20 PM   #4
Senior Member
Join Date: February 8, 2008
Location: Denver, CO
Posts: 1,925
Integral suppressors are NFA items as they are still suppressed.

What you are describing sounds like a muzzle brake of sorts, and as long as it is permanently attached and brings the barrel to 16" in length, it is not an NFA weapon.
Ridge_Runner_5 is offline  
Old May 23, 2011, 12:33 AM   #5
David Hineline
Senior Member
Join Date: December 23, 1999
Location: South Sioux City, Nebraska
Posts: 704
Most likely ok, but the only way to know is to measure the sound.

If your device reduces the sound then ports or not it is a silencer.
David Hineline is offline  
Old May 23, 2011, 06:59 AM   #6
Junior member
Join Date: May 23, 2011
Posts: 216
From what I know of suppressors having 2 and rebuilding them if the muzzle of the your flash hider is closed in any form i.e. paper rubber cover etc and has no holes to the exterior and the cover is not removable or destroyed upon firing it is indeed a suppressor. Not to confuse a muzzle brake with a flash hider as flash hiders suppress the muzzle flash not sound, where as a brake suppresses recoil and usually makes the rifle louder at the shooters end do to the gas being redirected back and upward. That being said I doubt you have a suppressor of any type.
Maxem0815 is offline  
Old May 23, 2011, 09:24 AM   #7
Willie Lowman
Senior Member
Join Date: March 5, 2009
Location: Uh-Hi-O
Posts: 2,554
Originally Posted by ATF
The term “Firearm Silencer” or “Firearm Muffler” means any device for silencing, muffling, or diminishing the report of a portable firearm, including any combination of parts, designed or redesigned, and intended for the use in assembling or fabricating a firearm silencer or firearm muffler, any part intended only for use in such assembly or fabrication.
Originally Posted by David Hineline
If your device reduces the sound then ports or not it is a silencer.
Not always.

In this pic Tom was shooting using some kind of super long ported barrel extension called a "metro barrel" IIRC. It did reduce the report of his shotgun and the device is not controlled by the NFA.

As to not confuse the issue any more, Pullnshoot, if your muzzle device is the same inside diameter from the crown of the barrel to the muzzle of the extention, with no baffles or anything that might be mistaken for something that is designed for the "muffling or diminishing the report" there should not be any issue. In fact, here is a pic of something like what you were describing in your first post.

"9mm has a very long history of being a pointy little bullet moving quickly" --Sevens

Last edited by Willie Lowman; May 23, 2011 at 09:31 AM.
Willie Lowman is offline  

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 07:24 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2015, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2015 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent:
Contact Us
Page generated in 0.05532 seconds with 7 queries