The Samson STAR-4 is one of the shortest rails avilable for the AR-15 pistol length upper. The STAR-4 is a two piece free float rail system for the AR Pistol or SBR with pistol length gas systems. The 6.0oz STAR-4 has a removable lower.
Specifications and Features:
Clamped To Prevent Barrel Nut Rotation
No Need To Remove Front Sight Base
All Rails 1913 Mil-Spec
Hard Coat Anodized
Forms Continuous Top Rail
6061 T6 Aluminum
Weight: 6.0 oz.