Originally Posted by Dirty Harry
How would you modify an M16 upper to fit an AR lower??? A lot of Vets and enthusiasts are building AR's that are as close to a replica of an M16 from the Vietnam era as legally possible. This includes using M16 uppers!
Not sure what you are trying to say? It would appear as if you just contradicted yourself though. The 1st line you are saying it can't be done??? The last line you mention enthusiasts who are doing it??
I never said "it is illiegal don't do it" I said it goes quite aways towards making a "readably convertable weapon". The link does not address modifications to the receiver... only that M16 parts in your AR15 is not legal.
The link states: An example of a firearm meeting this section of the definition is a semiautomatic AR15 rifle possessed with an M16 bolt carrier, hammer, trigger, disconnector and selector. If the semiautomatic AR15 is assembled with the described M16 parts and the rifle is capable of fully automatic fire, the weapon possessed in conjunction with the M16 parts, whether assembled or not, is a machinegun as defined.17
I'm not disputing this. I'm saying this is not fully cover the issue. It does not mention modifications to a receiver at all. So if the link was the only way to be in violation of the law then I can drill the hole for an auto sear but as long as I don't have an auto sear that is OK!! I don't know whether you can you use an M16 upper for an AR build but I do know that anything you do to an AR lower to make it accept an Auto Sear turns the receiver from an AR to an M16. Modifying it to fit an M16 upper would do this.