Brand: Kinetic Development Group
Model: MREX20 A
Firearm Fit: FN SCAR 20S
Top Rail: Maintains the factory 12 o'clock Picatinny rail configuration on the upper receiver
Attachment Style: Modular receiver/chassis upgrade; a drop-in replacement for the factory side and bottom rails
Attachment Positions: M-LOK slots at the 3, 6, and 9 o'clock positions; integrates a full-length Arca-Swiss rail on the bottom
Material: Machined 6061-T6 Aircraft-Grade Aluminum
Finish: Non-Infrared Reflective (NIR) Cerakote (Black)
Length: 12.875 inches (overall)
Weight: 6.0 oz (rail only)
Inside Diameter: Optimized to fit the heavy barrel profile unique to the SCAR 20S
Outside Diameter: Slim, ergonomic profile with a flat base for stable shooting from bags or barricades
Includes: MREX20 A rail, Really Right Stuff (RRS) RRS-Lock, two mounting bridges, hardware kit, T25 Torx wrench, and thread-locking compound

Features

The KDG FN SCAR 20S Rail – MREX20 A is a precision-focused modular handguard system designed to elevate the performance and versatility of the FN SCAR 20S platform. As part of KDG’s advanced MREX MkII lineup, this variant integrates enhanced stability, ergonomics, and mounting capability for long-range shooting applications. Constructed from 6061-T6 aircraft-grade aluminum with a durable non-infrared reflective Cerakote finish, the MREX20 A delivers a strong yet lightweight upgrade built to withstand demanding use. Its reinforced dual-bridge design increases rigidity, providing a rock-solid foundation for optics and accessories—helping improve consistency and accuracy at distance. What sets the MREX20 A apart is its integrated Arca Swiss rail system, allowing for direct tripod mounting without sacrificing M-LOK compatibility. Paired with Really Right Stuff’s RRS-Lock interface, it ensures a secure, repeatable connection for precision shooting setups. Designed specifically for SCAR 20S rifles in .308 Win and 6.5 Creedmoor, the MREX20 A enhances handling with a slim profile and flat-bottom geometry for improved support on barricades and bags. It’s an ideal upgrade for shooters looking to maximize modularity, stability, and long-range performance.

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