Dear ATF, the intent is to fire it with just my arm, any shoulder contact is COMPLETELY coincidental...
it's not illegal unless you completely "intend" to have it shoulder fired.
Capitalization in the following code is mine for emphasis. It can't be an SBR unless it is first a rifle. It can't be a rifle unless you "intend" it to be one. Arbitrary and capricious much?
"(7) The term ‘‘rifle’’ means a weapon designed or redesigned, made or remade, AND INTENDED to be fired from the shoulder and designed or rede- signed and made or remade to use the energy of an explosive to fire only a single projectile through a rifled bore for each single pull of the trigger.
(
The term ‘‘short-barreled rifle’’ means a rifle having one or more barrels less than six- teen inches in length and any weapon made from a rifle (whether by alteration, modification, or otherwise) if such weapon, as modified, has an overall length of less than twenty-six inches."