Brand: Kinetic Development Group
Model: MREX20
Firearm Fit: FN SCAR 20S
Top Rail: Full-length Picatinny rail that aligns with the factory upper receiver
Attachment Style: Drop-in upgrade; replaces factory side and bottom rails
Attachment Positions: M-LOK slots at 3, 6, and 9 o’clock; features two integrated QD sling swivel points
Material: Machined 6061-T6 aircraft-grade aluminum
Finish: Type III Hardcoat Anodized (FDE)
Length: 5 inches of extension beyond the receiver
Weight: 5.0 oz (rail only); 7.0 oz including all mounting hardware
Inside Diameter: Optimized for the heavy SCAR 20S barrel profile
Outside Diameter: Slim, ergonomic profile
Includes: MREX20 rail, mounting bridge, hardware kit, and thread-locking compound

Features

The KDG FN SCAR 20S Rail – MREX20is a premium modular handguard system designed to enhance the performance, ergonomics, and versatility of the FN SCAR 20S platform. As part of KDG’s proven MREX MkII lineup, it provides a rigid, extended interface for mounting optics and accessories while improving overall shooting stability and control. Constructed from 6061-T6 aircraft-grade aluminum with a durable non-reflective Cerakote finish, the rail is built to withstand demanding conditions without adding unnecessary weight. Its M-LOK interface offers extensive mounting flexibility for bipods, lights, lasers, and other mission-critical accessories. Engineered with input from precision shooters and professionals, the MREX20 system delivers a rock-solid platform for long-range applications, improving consistency and accuracy. The design also incorporates an ergonomic profile and reinforced structure, ensuring reliable performance whether shooting from prone, barricade, or supported positions. Purpose-built for the FN SCAR 20S, this rail upgrade transforms the rifle into a more capable and customizable precision platform—ideal for shooters looking to maximize performance, modularity, and durability.

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