非制式枪支散件认定的顺向原则

Forward Principle on Identification of Non-Standard Firearm's Parts

目前国内各鉴定机构对非制式枪支散件的鉴定主要是采用功能等效比较的方法作出判断,即与制式枪支的散件进行比较,功能相同或类似即认定为枪支散件。但是对非制式枪支的认定还必须满足枪口比动能等于大于1.8 J/cm2这个阈值条件,没有达到或不能确定是否能够达到这个阈值的,均不能认定是枪支,因此作为其结构基础的散件也不能认定为"枪支散件"。由于检验的散件通常都不是成套的,多数情况下无法组装成一支能够发射弹丸的枪支以测试其枪口比动能,为此,本文对非制式枪支散件的认定提出了5个技术途径,为这一检验项目提供了有效、可靠的方法和思路。

Currently, the identification of non-standard firearm＇s parts mainly applies the comparison of functional equivalent, by which one or some gadgets can be determined as one of/or the firearm＇s parts if a same or similar function was verified between the compared gadget（s） and the standard firearm＇s parts. However, a necessary requirement must be met that the specific kinetic energy of muzzle is equal or greater than the threshold value of 1.8 joules, meaning that the gadgets identified as firearm＇s parts are able to make the assembled gun shoot its bullet at the muzzle＇s specific kinetic energy no less than 1.8 joules; otherwise, they cannot be identified as the firearm＇s parts. Since the test parts are usually not of/from whole set, incapable of assembling into one complete firearm to fire projectiles in most cases to test the specific kinetic energy of muzzle, five inter-correlative technical approaches were here proposed for identification of the non-standard firearm＇s parts, with purpose to offer effective, reliable choices and some ideas on the same or similar kind of test.