The Kinetic Development Group MREX Rail (Kinetic Development Group part no. MRX5-MK2-015) is built specifically for the FN SCAR 15P, replacing the factory handguard with a free-float M-LOK rail system for mounting lights, grips, and other accessories in a repeatable, consistent position. A free-floating design keeps the barrel from contacting the handguard under recoil, which can help maintain accuracy compared to a handguard that touches the barrel. Kinetic Development Group engineers its rail systems specifically around each host platform’s exact receiver and barrel nut interface rather than offering a generic universal fit. Finished in black, it’s a purpose-built upgrade for SCAR 15P owners who want a modern M-LOK accessory-mounting platform.

Key Specifications

• Built specifically for the FN SCAR 15P.
• Replaces the factory handguard with a free-float M-LOK rail.
• Finished in black.

Frequently Asked Questions

What rifle does this rail fit? It’s built specifically for the FN SCAR 15P.

Why choose a free-float design? A free-floating rail keeps the barrel from contacting the handguard under recoil, which can help maintain accuracy.

Buy the Kinetic Development Group MREX Rail for FN SCAR 15P, Black

Upgrade a SCAR 15P with a modern free-float M-LOK accessory platform. Browse our full rifle accessories and parts selection and order from our Lubbock, Texas gun shop for fast, direct shipping.