총기별 발사 후 뇌관 화약류 잔사물의 분포특성
Distributive Characteristics of Primer Residue after Firing of Various Firearms
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현재, 우리 군의 주력 개인화기로 사용되고 있는 K-2소총과 CAL.45 권총 발사 시, 뇌관화약 잔사들의 형태와 방향 그리고 거리에 따른 분포특성을 확인하기 위하여 총구 쪽을 기준으로 한 4방향으로 각각 40, 80, 120 및 160 cm 간격의 위치에서 뇌관화약 잔사 시료를 채취하고 발사 원점인 오른손에서의 채취는 별도로 실험하였다. SEM/EDS를 통하여 분석한 결과, K-2소총 발사시 뇌관화약잔사물의 검출율은 총구 쪽, 오른 쪽(탄피 배출구 쪽), 후면, 왼쪽 방향 순으로 높았고 CAL.45 권총은 총구 쪽이 제일 많 이 검출되었으며 오른쪽, 후면 및 왼쪽은 모두 비슷한 수준의 검출율을 나타내었다. 거리에 따른 뇌관화 약 잔사물의 검출율은 K-2소총의 경우, 총구방향에서 160 cm까지 계속 증가하는 추세를 보였으며 CAL.45 권총은 80 cm까지 증가 후 급격히 감소되는 경향이었다. 또한, K-2소총과 CAL.45 권총 모두 탄피가 방출되는 오른쪽은 120 cm까지, 그리고 뒤쪽과 왼쪽은 80 cm까지 잔사물들이 증가하다가 그 이상 거리에 서는 감소됨을 확인하였다.
Abstract
To find out how direction and distance affect how primer residue is distributed from the K-2 automatic rifle and CAL.45 pistol, the major firearms used in the military, the muzzle of each weapon was pointed in four directions and fired at 40, 80, 120 and 160 cm with the front of the muzzle indicating the direction. Then, the primer sample was collected. The collection from the shooting point of the right hand was tested separately. Analysis using the SEM/EDS show that the most primer was detected in the frontright (where the cartridge is ejected)backleft, in that order for the K-2. For the CAL.45, the most primer was detected based on the direction of the muzzle compared to the right, left, and back, which show similar rates of detection. As for how distance affects the primer detection rate, the detection rate for the front kept increasing until 160 cm for the K-2; however, for the CAL.45, the primer detection rate increased until 80 cm and then decreased rapidly. Both the K-2 and CAL.45 demonstrated an increasing detection rate for the right side where the cartridge was driven out. As for the left and back side, the detection rate increased until 80 cm and started the decrease as the distance surpassed 80 cm.
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