9.7 inch 14 inch Picatinny rail System Super Modular Rail Handguard Rail For HK MR556 HK416 Airsoft

^{The Super Modular (SMR) HK was designed to replace the standard rail on an HK MR556 or HK 416 weapon platform. This rail system utilizes the stock HK barrel nut however incorporates strength, rigidity, and modularity.
material：Aluminum alloy
Nuts internal thread diameter:30.5mm
Actual Length :9.7inch /245 mm  14inch/356mm
For Airsoft HK MR556 or HK 416 
Colour :BK/CB
Model Number: HK416 Handguard
Guide Length: 10"/25cm
Guide Type: Picatinny
Package：1 pcs Handguard Rail}