Piston Omega Rail™ 7.0, Small Diameter

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The Daniel Defense Piston Omega Rail™ 7.0, Small Diameter is engineered to work with many gas piston systems and gas piston conversion kits. It is a free float rail system that allows the individual operator to easily install it with the provided allen wrench and requires ZERO modification to the weapon! The Piston Omega Rail features an integral QD sling swivel mount with rotation limiter, an uninterrupted upper rail platform, and a removable top cover for access to the piston components.

The Piston Omega Rail is available with two different sized top covers to accommodate different sized piston components. The Small Diameter is compatible with ARES and LWRC piston systems and the Large Diameter is compatible with the Bushmaster and CMMG Piston Systems. This light weight rail system is meticulously CNC machined from Aircraft Grade Aluminum and is Military Specification Type III Hard Coat Anodized. All the Omega Rail fasteners are military specification.

The Piston Omega Rail 7.0, Small Diameter is designed to work with carbine-length AR15 gas systems and its exceptionally light weight makes it perfect for short rifles where size and weight are crucial performance attributes.

All Daniel Defense Rail Systems are built to the 1913 Military Specification and are 100% Quality Assurance checked for conformity to the specification.


  • User Install
  • ZERO Modification to host weapon
  • Free Float
  • Integral QD Sling Swivel Mount with limited rotation
  • Continuous upper rail with upper receiver
  • Removable Top Cover for access to piston components
  • Light Weight
  • Oval Shape to feel like traditional Hand Guards

Materials & Construction

Precision CNC machined from Aircraft Grade 6061-T6 Aluminum and Military Specification Type III Hard Coat Anodized for a rock hard lasting finish.  

  • Material: Aircraft Grade 6061-T6 Aluminum
  • Finish: Military Specification Type III Hard Coat Anodized
  • Length: 7.21"
  • Width: 1.90"
  • Weight 8.0 Ounces
  • Inside Height: 2.083"
  • Inside Diameter: 1.08"
  • Made in the USA!

Warranty Statement

All Daniel Defense rail systems carries a 100% satisfaction guarantee against defects in original materials and workmanship. If your Daniel Defense rail system shows evidence of such defects, Daniel Defense will make every accommodation to fix, repair, or replace your rail system in the most expeditious and inexpensive manner possible. Daniel Defense does not warranty products or damage caused to our products by the correct or incorrect installation of other manufacturer’s products. Be sure to retain your sales slip as proof of purchase date when making a claim.

Additional Information

Manufacturing # / SKU 01-022-10501
Restricted Shipping Yes
Product Weight 8.0 oz
Rail Length 7.21
Width 1.90"
Height No
Inside Diameter 1.08"
Barrel Nut None
Gas System Length Carbine
Free Float Yes
Continuous Upper Rail Yes
Integrated Sling Swivel Attachment Point Yes
Manufacturer Daniel Defense

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