Introducing the TRIBUS Enhanced Anti-Rotation Castle Nut & Extended End Plate. The TRIBUS is next iteration of the previous AR-ECN&EEP. New features include two addition QD mounting points added to the left & right side of the extended end plate. Totaling in 3 QD mounting points. The extended end plate's QD mounts are pushed back away from the webbing of the primary hand, allowing for better weapon manipulations in tight spaced and under stress without the startling pain that can result from a pinched hand when using a sling attached to a standard, flat QD end plate. Another big improvement is the added anti-rotation castle nut feature. Once installed, use the set screw to prevent the castle nut from backing out during weapon usage. The TRIBUS is available in an anodized color line.Features:- Antirotation Castle Nut- 3 QD Mounting Points- Extended End Plate for prevention of pinching hand when using a sling attached Staking not required, castle nut will not back out once screw is threaded.Package includes:1x Extended castle nut1x Extended end plate1x (insert allen key size) screw