5KU 13 Inch SMR MK8 M-LOK Handguard - M4 AEG / GBB

The 5KU 13” SMR MK8 M-LOK Handguard is a CNC-machined aluminum handguard designed for M4/AR series airsoft replicas. Featuring a Geissele-style MK8 Super Modular Rail design, it combines a full-length 20mm Picatinny top rail with an M-LOK mounting system, offering a lightweight, durable, and highly modular solution for both AEG and GBB platforms.

The 5KU SMR MK8 13” is designed to modernize your M4/AR build with a slim, rigid rail system. The CNC-machined aluminum construction ensures solid durability without unnecessary weight. The full-length 1913/20mm Picatinny top rail allows secure mounting of red dot sights, scopes, and other aiming devices, while the M-LOK slots provide flexible attachment points for grips, weapon lights, lasers, and other accessories.

The handguard comes with a barrel nut and is compatible with most AR/M4 series AEG, GBB, MWS, and CGS-spec replicas. Minor fitting may be required depending on manufacturer tolerances.

Available in Black and Tan.

1 x 5KU 13” SMR MK8 M-LOK Handguard

1 x Barrel Nut