Area 419 ARCALOCK 14'' Universal Dovetail RailNOTE: Rail kits now come with only one action screw and it is a longer screw. With the endless action stock chassis combos we found that nearly everyone was required to trim the screw for fitment anyway so the longer screw makes much more sense. MLOK HARDWARE IS NOT INCLUDED. Area 419 is always looking for ways to improve existing products when not developing new technologies. With the rapid growth in popularity of ARCA rails in precision rifle ARCA