CMMG Resolute 300 Mk57 5.7x28 AR-15 Semi Auto Rifle 16.1" Barrel 20 Rounds RML15 M-LOK Free Float Hand Guard Cerakote Midnight Bronze

Item No. 2-CMMG57A3FFD-MB
CMMG Resolute 300 Mk57 5.7x28 AR-15 Semi Auto Rifle 16.1" Barrel 20 Rounds   RML15 M-LOK Free Float Hand Guard Cerakote Midnight Bronze
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Our Low Price $1,645.25
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Brand: CMMG, Inc.
UPC: 816422029761
Item #: 2-CMMG57A3FFD-MB
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.

Due to high volume, some firearms may require up to 2 weeks to process.

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


The CMMG Resolute now Comes Chambered in the Amazing 5.7x28 Cartridge

For over a decade CMMG has remained committed to producing some of the best AR platform firearms in the industry. The Resolute 300 is the ideal multi-purpose firearm from CMMG with all of the features you're looking for in an AR15 rifle. New for 2020 is the renaissance of the 5.7x28 cartridge which this particular AR-15 rifle is now chambered in. With a 416 stainless steel barrel, free float M-LOK compatible hand guard and a Geissele Automatics SSA 2-Stage Trigger what more could you ask for? Whether you like plinking for recreational shooting, need a reliable gun for varmint hunting and pest control, or rifle to protect your home and family, the Mk57 Resolute 300 from CMMG is the only gun you'll need!

CMMG Resolute 300 Mk57 AR -15 Semi Auto Rifle (Midnight Bronze) Specifications and Features:

  • AR-15 Style Semi Automatic Rifle
  • 5.7x28
  • 16.1" 416 Stainless Steel Medium Taper Barrel
  • Threaded Muzzle 1/2x28
  • SV Muzzle Device
  • Forged 7075-T6 Aluminum Receivers
  • Standard AR-15 Lower Receiver
  • 20 Round ProMag 5.7x28 Pistol Magazine
  • CMMG RML15 M-LOK Free Float Hand Guard
  • CMMG Oversized Charging Handle
  • CMMG Ripstock with 6 Position Enhanced Receiver Extension
  • Magpul MOE Pistol Grip
  • Geissele Automatics SSA 2-Stage Trigger
  • Magpul MOE Trigger Guard
  • CMMG Ambidextrous Safety Selector
  • Overall Weight 6lbs 1oz
  • Overall Length 32.8"
  • Made in the USA
  • Cerakote Finish
  • Midnight Bronze
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.

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