The main flaws of the gun have been corrected. The following modifications not only improve the range of the gun, but improve its strength and make it far more comfortable. I have added a simple safety switch, a pin guide/wrist gaurd and I've buit a better trigger which allows for the pin to move more freely. I have added a "chunk" of knex behind the sights to make the gun stronger. I will post if this gets 4.2.