Hello CGN,
Until August 20th, 2018 receive a $100 coupon* towards Milling or Cerakote when you pre-order a Glock 19X or Glock 34 Gen 5 MOS through the Black Box Customs webstore. Links are below.
*Coupon valid until February 15th, 2019. This coupon does not hold any cash value and cannot be used in conjunction with any other promotions.
Glock 19X from $810.00
Glock 34 Gen 5 MOS $1023.00