Rock River Arms LAR-15 Lightweight Mountain Rifle 5.56 NATO 16" Barrel 30 Rounds Free Float Hand Guard Carbine Stock Matte Black Finish

Item No. FC-842834110117
Rock River Arms LAR-15 Lightweight Mountain Rifle 5.56 NATO 16" Barrel 30 Rounds Free Float Hand Guard Carbine Stock Matte Black Finish
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Brand: Rock River Arms, Inc.
MFR #: MT1800
UPC: 842834110117
Item #: FC-842834110117
Typically ships within 5 to 7 business days when a valid FFL is received
  • All firearm sales are final. NO RETURNS.
  • Return to manufacturer for warranty service.
  • Actual buyer must pickup from FFL dealer who will conduct the background check. Learn more
  • Firearm transfer must be the actual transferee/buyer. Click here to see BATFE form "Transaction Record Part 1".
  • Firearms are only available for purchase online.

A $15.99 handling fee will be charged per order. No additional charge for multiple firearms on an order.


Rock River Arms Has Built a Rifle That Weighs in at Only 6.2lbs

The Rock River Arms Lightweight Mountain Rifle is built on a standard pattern AR-15 lower receiver from Rock River known as the LAR-15 lower. This lower comes standard with the Rock River Arms Winter Trigger Guard, Hogue Pistol Grip and 6 position collapsible stock. The upper which is the crowning jewel of this rifle comes with a 16" lightweight chrome moly barrel, a lightweight low profile gas block and Rock River Arms Lightweight Aluminum modular mountain rifle hand guard. This rail features a full length picatinny rail on top with the ability to add modular accessories rails at various points on the hand guard directly.

Rock River Arms LAR-15 (Matte Black Finish) Specifications and Features:

  • Rock River Arms MT1800
  • Direct Gas Impingement Semi Auto Rifle
  • 5.56 NATO (accepts .223 Remington)
  • 16" Chrome Moly Lightweight Barrel
  • 1:9" Twist Rate
  • Forged RRA LAR-15 Lower Receiver
  • Forged A4 Upper Receiver
  • A2 Flash Hider
  • Barrel Threaded 1/2x28
  • Rock River Arms Lightweight Low Profile Gas Block
  • Rock River Arms Two Stage Trigger
  • Rock River Arms Winter Trigger Guard
  • Star Safety
  • 1 MOA At 100 Yards
  • 30 Round Magazine
  • Accepts Standard Pattern AR-15 Magazines
  • Rock River Arms Lightweight Aluminum Mountain Rifle Hand Guard
  • Full Length Top Rail
  • Modular Accessory Rail Compatible
  • Rock River Arms 6 Position Tactical Car Stock
  • Hogue Rubber Grip
  • Overall Weight 6.2lbs
  • Overall Length 32.6" Extended
  • Hard Coat Anodized Finish
  • Matte Black
  • One Magazine
  • Modular Accessory Rail
  • RRA Case
  • Manual/Warranty Information
Buying a Firearm Online is Easy!
  • Add your selected firearm(s) to your shopping cart and check out.
  • Select a local Federal Firearms Licensed (FFL) Dealer that will accept the firearm and complete the transfer. Find a FFL Dealer HERE.
  • If you choose an FFL Dealer that is not on our preferred list, you or your FFL Dealer will be required to fax or email us a signed copy of the Federal Firearms License referencing your Cheaper Than Dirt! order number. Download the Firearm Sales Form
  • Pick up your firearm from the FFL Dealer, who will need to do a criminal and mental health background check. Transfer fees may apply.
Buying Firearms on the Internet

Federal law requires firearms to be shipped to FFL Dealers. For an individual to receive a firearm from Cheaper Than Dirt! it must be shipped to an FFL Dealer in your state.

Locating a Federal-Firearm License Dealer (FFL) in Your Area

There are thousands of FFL Dealers in the United States. You may choose an FFL Dealer from our preferred listing or you may find a dealer in your area. To find a list of FFL Dealers in your area area CLICK HERE. If you choose a dealer that is not on our preferred list, either you or the FFL Dealer will be required to submit a copy of the Federal Firearms License referencing your Cheaper Than Dirt! order number. The FFL Dealer will usually charge a fee to conduct the transfer. There are duties that the FFL Dealer is required to do during the process which include a criminal and mental health background check through NICS. Remember, the FFL Dealer is doing you a favor and the process takes time to complete. Fees can vary so check with the FFL Dealer ahead of time to request a quote on the fees associated with your firearm transfer. The FFL Dealer is in business to make a profit and your internet purchase may be viewed as competition to their retail business. If you feel the fees are too high, you can search for another FFL Dealer.

Completing the Transaction

Once you place the firearm in your cart and checkout you will receive a confirmation email that has your order number and further instructions. We will verify the FFL license and also make the FFL Dealer aware that an order from Cheaper Than Dirt! will soon be arriving for you. Most orders are processed within 2-3 business days from the time we receive and verify the FFL Dealers information. Once shipped, your firearm will arrive at the FFL Dealer within 3-7 days business days. The FFL Dealer will begin processing the shipment. It may be an additional day or so before the FFL Dealer is ready to conduct the transfer of the firearm to you. Call the FFL Dealer and set an appointment to confirm that the firearm is ready to be transferred.

Please note! All Firearm Sales are Final

It is important to thoroughly inspect your firearm before completion of the transfer. Once the firearm is transferred into your name, Cheaper Than Dirt! will not accept a return or exchange under any circumstance. If a defect is discovered after completing the transfer, you must contact the manufacturer directly for repair or replacement.