[ARCHIVED THREAD] - Pinned?

Posted: 2/2/2008 12:53:04 PM EDT

Okay Im contemplating buyin a barrel for my gun, it's a 14.5 m4. Only problem is Im not sure if the flash suppressor is pinned or not. It has a phantom on it, my question is can you tell buy looking at it? Cause he isn't sure either, he's never attempted to take it of and he won't try cause he is afraid he will break it or something, and I don't wanna buy an upper that may be illegal.

Thanks

Posted: 2/2/2008 7:37:45 PM EDT

[#1]

Who made the upper? You could always contact them to find out. Sometimes the FH will be discolored where the pin is. The only way to know for sure is to see if it will come off. If if does there are many places you can send it to be pinned ADCO is one of them. You could also do it yourself with a dril, vise and a mig welder. Here is a link. All the way to the bottom is where the talk about perm FH. Hope this helps.

height=8

Quoted:
How to permanently attach a muzzle device:

If you have a barrel that is 14.5", you must permanently attach a muzzle device that makes the total lenght 16" or more. Best to go 16.1" at least to be safe. For the 14.5" barrel, it is commonly accepted to use the Vortex or Phantom style of flash supressors. The ATF states to be permanently attached, the muzzle device cannot be removed with hand tools easily and must use 1100 degree silver solder, blind pinnned and welded, or welded completely around the barrel. This writeup will demonstrate the most common method, the blind pin and weld.

This was originally posted by wildearp, I am just using the basics of his post for this section:

Start by predrilling the muzzle device through one side - while removed from the barrel. The drill size should be the same diameter as your pin size. Coat hanger works great.:

www.kevinholman.com/byor/perm/perm1.jpg

Next - attach the muzzle device, time it with a peel or crush washer, and then drill into the barrel, using the hole in the muzzle device as a guide. A drill press works well here, to ensure you do not drill too deep. If you penetrate the bore you will destroy the accuracy of the barrel - go slow here. You only need to drill deep enough to accept the pin.

www.kevinholman.com/byor/perm/perm2.jpg

It should look like this:

www.kevinholman.com/byor/perm/perm3.jpg

Now we are ready to insert the pin.... this is coat hanger, cut to fit.:

www.kevinholman.com/byor/perm/perm4.jpg

Before welding, cover the barrel well to ensure you dont mark it up with welding splatter. Wrap it well. Melted adhesive comes off. Welding splatter doesnt so well. (another great option here is to wrap the barrel surfaces with a few layers of aluminum foil.... no adhesive mess.

www.kevinholman.com/byor/perm/perm5.jpg

A pic after welding. At this point - you can hit it with a dremel, or sander, to blend it in (careful!!!) Then hit it with some cold blue to darken it.

www.kevinholman.com/byor/perm/perm6.jpg

Installed:

www.kevinholman.com/byor/perm/perm7.jpg

Posted: 2/4/2008 11:38:59 AM EDT

[#2]

Yeah, thanks that helps alot! So there isn't anyway to totally be sure?? Well I'll probably just buy from somewhere else then. Cause I seriously doubt the old bastard will let me mess with it anyway.

Thanks,

Posted: 2/4/2008 1:33:36 PM EDT

[#3]

Quoted:
Yeah, thanks that helps alot! So there isn't anyway to totally be sure?? Well I'll probably just buy from somewhere else then. Cause I seriously doubt the old bastard will let me mess with it anyway.

Thanks,

Good I idea there are plenty of great manufacturers on this site that will sell you a great rifle that is 100% legal.

[ARCHIVED THREAD] - Pinned?

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[ARCHIVED THREAD] - Pinned?

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