Shop › KAK M16 A2 RIFLE BUTTSTOCK KIT KAK M16 A2 RIFLE BUTTSTOCK KIT $62.99 KAK Industry A2 Buttstock Kit, For AR-15, Matte Finish, Black AR15-KT-114 Quantity: Add To Cart Added! KAK Industry A2 Buttstock Kit, For AR-15, Matte Finish, Black AR15-KT-114