CNC Border Patrol Casings vapes using real brass 30 caliber

using real brass 30 caliber casings and copper billets machined into nibs for the complete pen kits

This blue tube-in silicone mold casts one upper and one lower tube for the following kits:

Incorrect ratio of Parts A & B (should be 1:1 by weight) causes solid white

Berea Sierra tube and its compatibles

Dragon Twist and Skull Twist

CNC Border Patrol Casings vapes using real brass 30 caliberCNC engravings featuring Border Patrol, using real brass 30 caliber casings and copper billets machined into nibs for the complete pen kits. Casings are not for beginners and requires previous experience or knowledge in building a custom cartridge pen. If this is your first time making a cartridge pen, we suggest you purchase the complete pen kit instead of individual casings. CNC Engraved Cartridge Casing Only Cartridge engravings are made to order