The KDG HK 556 M-Lok rails are direct mount rail system, replacing the factory HK 556 rail systems. Like the 762 version, these rails are lighter, longer, and more ergonomic for the operator. The KDG HK 556 M-Lok rails come in two lengths: 10” and 13.75”. They feature a continuous monolithic picatinny rail at the 12 o’clock position, and M-Lok mounting slots at the 3, 6 and 9 o’clock positions. The systems also uniquely offers a forward mounting M-Lok slot at each of the 2, 4, 8, and 10 o’clock positions for offset accessories like lights and lasers. They also include two quick-detach sling attachment points on either side of the rail system for use with slings. The KDG HK 556 rails ware available in black and brown type 3 hard coat anodizing. The KDG HK 556 M-Lok rail is compatible with Heckler and Koch 416 variants including: 416, MR 556, and M27.
Overall length: 9.57″
Material – 6061-T6 Aluminum
Finish – Type 3 Hard-coat Anodized Black
Weight: 10.2 ounces