9 Inch M-Lok Rail


The 9 Inch M-Lok Rail is a lightweight rail solution that is compatible with any of our “FS” free float adapters, and achieves a solid lockup by bolting directly to the FS adapter.

In stock (can be backordered)


9 Inch M-Lok Rail

Frontier Tactical™ creates innovative solutions for your AR. The 9 Inch M-Lok Rail was designed as a lightweight rail solution for those that want a variety of accessory mounting options. The 9 Inch M-Lok Rail is compatible with any of our “FS” free float adapters, and achieves a solid lockup by bolting directly to the FS adapter.

M-LOK mounting solution
Mil-Spec hardcoat black anodized
Free floating design
1.360” Internal Diameter
9” Rail with Picatinny top rail
Weight: 6.5 ounces

Made in the U.S.A.

We personally believe that by manufacturing high quality products any need for guarantees or warranties become largely unnecessary. It is our intent to prove that we appreciate your investment in our product. To that end, we diligently strive to provide you with solid value for your trust in us at Frontier Tactical™.

The 9 Inch M-Lok Rail has been designed to accept most commonly available rail system accessories. It is made from high strength aluminum for durability and lighter overall weight.

AR-15 Complete Upper Receiver - FT

At Frontier Tactical™ we are committed to delivering the highest quality AR and tactical product innovations to you. We pledge to develop and manufacture only technologically superior solutions and promise to pioneer the evolution of firearms for generations to come.

Our mission is to provide our customers with products like no others on the market. Our goal is to forge original solutions to obstacles defined by our customers through the masterful use of technology, innovation and superior skill. We empower our customers, employees, vendors and peers through knowledge, communication and the spirit of ethical cooperation.


Additional information

Weight 1.0 lbs
Dimensions 10 × 3 × 3 in

Specifications & Notices

Fits – Mil-spec AR-15 barrels. Material – Aluminum. Finish – Black Matte.

Weight: 6.5 oz. Length: 9” Width: 1.360” I.D.

The 9 Inch M-Lok Rail is manufactured in the U.S.A. Frontier Tactical™ is veteran owned and operated in the U.S.A.

Special Notice!

Any changes made to your AR-15 require your knowledge, understanding and compliance with BATFE regulations and local/State/Federal laws. It is the purchaser/owner’s legal responsibility to comply with these laws/regulations.

Specifically, the creation of a Short Barreled Rifle (SBR), Short Barreled Shotguns (SBS), suppressed barrels, or Any Other Weapon (AOW) requires compliance with the National Firearms Act of 1934 (NFA). All NFA rules apply to these modifications. Do not assume anything. Do not break the law.

Frontier Tactical™ LLC and its employees and agents are not liable and will be held harmless from and against all liabilities, legal fees, imprisonment, damages, losses, costs, and other expenses resulting from the illegal use by any purchaser, installer or operator of a firearm with our products.


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