The X4MSD Picatinny Aluminum Quad Rail is designed the for AR15/M4/M16 rifles providing durability, reliability, and balance during combat.

The X4MSD Picatinny Aluminum Quad Rail allows the option of a Pictainny rail for additional accessories of mounting tactical lights, slings, grips, etc. It is defined 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 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 and back
• The bottom rail is secured with friction fit ledge and a retractable spring loaded piston
• Slots around the rails provide maximum ventilation
• CNC machined from aviation grade aluminum to MIL-1913 standard
• Manufactured with a hard anodized black oxide finish for durability