Quad Aluminum Picatinny Rail for AR15/M4

Newly designed for the requirements of the US Army to improve zero retention and reputability.
The upper three rails section is mounted underneath the end cap and is secured with a friction fit ledge and roll pins.

The X4MS Picatinny Aluminum Quad Rail for AR15/M4 rifles with durability, reliability, and maintaining balance while interfacing with all issued weapon system components. The X4MS Picatinny Aluminum Quad Rail defines as a superior zero retention by having the upper three rail section mount underneath the end cap and secured in a place with a friction fit ledge with roll pins. The receiver end of the X4MS is tightly secured to the barrel with a nut bracket attached to the upper three rail section with four captive flathead screws. The bottom rail uses locking lugs with a retaining pin for a secure mount to the upper hand guard.

→ Top rail creates one long monolithic rail along with the existing flat top rail
→ Equipped with two push-button sling swivel mounting points in the front
→ Slots around the rails provide maximum ventilation
→ Constructed of Aluminum material
→ CNC machined to MIL-1913 standards with a hard anodized black oxide - ease for maintenance
→ Compatible with grenade-launchers

measurements