Note: Image may not be an exact representation of the actual item. Please read the complete description before purchasing.

CORE15 Roscoe RB2 AR-15 Semi Auto Pistol .300 Blk 10.5" Barrel 30 Rounds Black

CORE15 Rifle Systems
| Tell a Friend
Can we ship this to you?
Typically ships within 1 to 2 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 $10 handling fee will be charged per order. No additional charge for multiple firearms on an order.
CORE Rifle Systems is on a mission is to provide you with the best possible product at a price everyone can afford! Starting with Eugene Stoner's original design as the basic CORE of their AR-15 rifles the add value and function by incorporating many of today's modern advancements and accessories into every rifle. CORE Rifle Systems uses state of the art machining processes with exacting tolerances to not only exceed military standards but also exceed your expectations.

The CORE15 Roscoe RB2 AR-15 Pistol starts with a flat top optic-ready upper with laser engraved T markings M4 feed ramps and a dry lube internal finish. A forged 7075 T6 aluminum lower sports a flared magwell for faster and easier reloading. The Mil-Spec Carpenter 158 Steel bolt is housed in a M-16 shot peened chrome lined 8620 bolt carrier and a properly staked gas key. This pistol is ready for your favorite optics or accessories with a 9.5" Key Mod Handguard that includes a full length picatinny top rail. It features a KAK Industries Pistol Buffer Tube and a SIG Sauer SB15 Pistol Stabilizing Brace. Expect fantastic accuracy and precision with a 10.5" Chrome Moly Vanadium barrel that has a 1:7 twist chambered for .300 AAC Blackout. When you're ready for a next level AR platform firearm get the CORE15 Roscoe RB2!

Specifications and Features:
CORE15 Roscoe RB2 12250
AR15 Semi Automatic Pistol
.300 AAC Blackout
30 Rounds
10.5" 4150 CMV Barrel with Midwest Industries Flash Hider
Black Nitride Finish
Direct Impingement Pistol Length Gas System
Mil-Spec Forged 7075 T6 Aluminum M4 Flat Top Upper Receiver with Dry Lube Internal Finish
MIL-Std 1913 Picatinny Top Rail with Laser Engraved T Markings
M4 Feed Ramps
Mil-S pec Forged 7075 T6 Aluminum Lower Receiver with Beveled Magwell
Mil-Spec 158 Carpenter Steel Bolt
Shot Peened M-16 Chrome Lined 8620 Steel Bolt Carrier with Mil-Spec Staked Gas Key and Tool Steel Extractor
CORE15 Hardcore V.2 Charging Handle
CORE15 Key-Mod 9.5" Handguard with Full Length Picatinny Top Rail
KAK Industries Pistol Buffer Tube
SIG Sauer SB15 Pistol Stabilizing Brace
Type III Class II Hardcoat Anodized Finish
Weight 6 lbs 7 oz

Note: Here is the NRA's interpretation of the latest ATF letter regarding the use and legality of pistol braces.
NRA Interpretation of Latest ATF Letter

Item#: 7-G12250
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.