Slotted and uncut operator rails
All our newly manufactured receivers and blanks are now made with slotted rails; the operator rail has a vertical slot cut. This will provide some extra authenticity for all builds, but will not functionally matter except for 07/02 FFL holders doing post sample builds. These rails alone do not permit the installation of full auto parts or change the method of operation of a semi auto firearm.
Please note if you want to ensure having slotted rails in your order, mention it in the special instructions box during checkout. Sometimes receivers or blanks are taken from stock before customization, and would predate this change.
Slotted rail installed in receiver