Manufactured by SSK Industries on a McMillan Bros. BMG action. The 14.5 JDJ cartridge is based on the standard .50 BMG with the neck opened to accept the SSK 1,173 grain solid brass 14.5mm bullet. This round is large enough that SSK Industries had to get a "Non Destructive Device Exemption" from the ATF for it. Manufactured without sights, large four chamber muzzle brake, and a super heavyweight tapered barrel. The receiver is marked "McMillan Bros." on the left and the serial number is on the right. With a Nightforce NXS 5.5-22x56mm adjustable scope. Mounted on a flat bottom style thumb hole stock with a folding adjustable bipod, and solid recoil pad. The rifle includes a box of approximately 130 primed .50 BMG cases necked up to 14.5 mm, 140 14.5mm bullets, and reloading dies.