CAA Tactical has announced the Roni-G1 pistol-rifle conversion kit for full-size Glock models with light rails (17,18,19,21,22,31,32) which turns your pistol in to a small rifle. What’s neat is that this is an enclosure which houses the entire pistol.
The RONI-G1 is constructed of aluminum and polymer, has three Picatinny rails, integral spare magazine holder and includes a detachable folding forearm grip. Available January 2010.
As Alan mentioned to me, if you own one and the pistol it goes on, you better have an NFA tax on it.