• spawn a BLUFOR ghost hawk helicopter (flying) with the name infheli .
• place the following into the helicopters init:

z1 moveInCargo infheli;

• create a player character on the map with the name Z1 .
• place the following into the players init.

removebackpack this; removeallweapons this; this addbackpack "B_Parachute"; this addweapon "arifle_MX_SW_pointer_F"; this addmagazine "100Rnd_65x39_caseless_mag"; this addmagazine "100Rnd_65x39_caseless_mag";

• click preview.

Note that the person is (hopefully) inside the helicopters passenger seats. Also make sure he has the option to eject.

• making sure there is ample height under the helicopter, order your player to eject. After you eject you should get the 'reload' icon on your crosshair. If you press R at this time, before you open your parachute, he should magically take the weapon off his back, reload it, and put it back on.

I discovered this bug using an M4 from Massi's NATO / SF weapons. While there's no reason for it to not apply to all weapons, for some reason it might not.