"From what I've read so far, It seems as if I can convert a pistol into a rifle, but NOT a rifle into a pistol ???"
Start from the begining:
A rifle is a rifle.
16 inch barrel, overall length of 26 inches, made to be fired from the shoulder.
A pistol is a pistol.
Held in one hand, no stock.
Stupid laws apply:
You can't make a rifle into a pistol.
It is a rifle, it will always be a rifle. You can register it as a SBR. It's still a rifle.
You can make a pistol into a rifle. It must have a stock and have a barrel longer than 16 inches and an overall length of 26 inches. You can make a pistol with a 20 inch barrel if you want, it can't have a shoulder stock. If you put a shoulder stock on a pistol with a barrel length of less than 16 inches it is a SBR.
You can't make a pistol into a SBR or an AOW.
"Reason I ask is, I have an AR-15 pistol, originally built and registered as a pistol, and would like to add a stock and/or a forward pistol grip to it..."
You have a preban AR15 pistol. If you add a stock to it it is now a short barreled rifle UNLESS you have a 16 inch barrel on it and the overall length is 26 inches or more.
If you put a forward grip on your AR15 pistol it is now an AOW. If you took your AR15 pistol and put a stock on it and a 16 inch barrel and thew overall length is 26 inches or more and a forward grip on it it is still an AR15 pistol, yet it is legal.
From the Bardwell website:
[url]http://www.cs.cmu.edu/afs/cs/user/wbardwel/public/nfalist/atf_letter7.txt[/url]
"If an individual were to obtain a rifle type receiver that had not previously been utilized in the assembly of a rifle, a handgun could be
made and not be subject to the provisions of the NFA. Verification must be obtained from the manufacturer of the receiver to establish
its authenticity."
NOTE: This letter was written in 1992, before the crime bill of 94.
The following would apply for an AR15 based pistol:
(c) A semiautomatic pistol that has an ability to accept a detachable magazine and has at least 2 of--
(1) An ammunition magazine that attaches to the pistol outside of the pistol grip,
(2) A threaded barrel capable of accepting a barrel extender, flash suppressor, forward handgrip, or silencer,
(3) A shroud that is attached to, or partially or completely encircles, the barrel and that permits the shooter to hold the firearm
with the nontrigger hand without being burned,
(4) A manufactured weight of 50 ounces or more when the pistol is unloaded, and
(5) A semiautomatic version of an automatic firearm
To the guys who keep saying check the Bardwell website I say this: This is the second time I have done so on this thread. I have yet to see anyone post anything with a URL that shows that a SBR does not have to have a stock.
A short barreled rifle must still meet the requirements of a rifle, SHOULDER FIRED.
You can cut down the stock, it can have a shorter stock, but it still must be a SHOULDER FIRED weapon.
Remove the stock and what do you have? it's a pistol...Nope, can't be that, it's not made to be fired from one hand. OK, it's an AOW. Nope, no forward grip.
A pistol is a pistol, a rifle is a rifle.
Unless you put a stock and a 16 inch barrel on a pistol and the overall length is 26 inches. Then it's a pistol...rifle! [X]