самодельное огнестрельное оружие.

Introduction. Open society, free internet access, modern means of communication and the press, lack of control over the media has led to the fact that many previously closed publications and reports on the development of small arms, ammunition, explosive devices, have become open to all those interested in the topic. As a result, recent years have seen a large number of applications for criminal purposes self-made firearms and ammunition or ammunition of nontraditional design. Special cartridge SС-4, standard cartridgeto the PSS silentgun,is nontraditional ammunition, because its design has a special piston seal, ejecting the bullet when fired and locking powder gases in the body of the cartridge case, thereby providing a noiseless and flameless fire. This ammunition is available in criminal trafficking and according to experts practitioners can be used independently as a cartridgebarrel without a regular weapon. Experimental part. The article presents the results of experimental studies on the possibility of using a special cartridge SС-4 in a self-made tubeless firearms; the possible options for self-made firearms with a cartridge SС-4 as the barrel. Discussion of results. Using the cartridge SС-4 alone as a cartridge-barrel is not safe. Despite the fact that the bullet in this case has sufficient destructive power, the disruption of a cartridge case eliminates one of the criteria of a firearm, namely reliability. When used in a product enhance a metallic case of cartridge SC-4, self-made firing device can meet the criteria of a firearm. In this case it should be referred to a firearm. Conclusions. Cartridge case is used in self-made tubeless design firearm as a barrel. Special cartridge SС-4 alone cannot be used to create self-made tubeless weapons, although whenthe bullet is activated cartridge has enough destructive power.In the case of improvement of a special cartridge SС-4 by strengthening the cartridge case self-made firing device can meet the criteria of a firearm and should be referred to the tubeless self-made firearms.