SCAR 20S/ FN PR/ MK20 Brass Catcher

Durable tactical SCAR 20S/ FN PR/ MK20 Brass Catcher for professional military, police, and competition using FN SCAR MK20 rifle in dynamic environments, extra length to reach the rail mounting point on MK20 rifle.

SCAR 20 top mount - Tactical Brass Recovery

FN SCAR Platform - Tactical Brass Recovery

SCAR 20S/ FN PR/ MK20 Brass Catcher

SCAR 20 top mount - Tactical Brass Recovery

SCAR 20 top mount - Tactical Brass Recovery

This is as close as I can get to a Mk 20 :)

FN Introduces SCAR 20S Precision Rifle -The Firearm Blog

The FN SCAR 20S:A Space Force Sniper

SCAR Chassis Brass Catcher