GB-112
M4 GBB ½ºÅåºÀ¿¡ »ç¿ëµÇ´Â ¾Ë·ç¹Ì´½ ¹öÆÛÀÔ´Ï´Ù.(Aluminum Buffer)
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WA, AGM ȣȯÀÔ´Ï´ÙÁ¦Ç°±æÀÌ: 83mm / ¹«°Ô : 80g