Rock Island Armory STK100 9mm Luger Semi Automatic Pistol 4.5" Barrel 10 Rounds Fixed Sights Rear Optic Cover Plate Aluminum Frame Anodized Finish Black

FC-812285026862 Rock Island Armory 5662510

Rock Island Armory STK100 9mm Luger Semi Automatic Pistol 4.5" Barrel 10 Rounds Fixed Sights Rear Optic Cover Plate Aluminum Frame Anodized Finish Black
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FC-812285026862 Rock Island Armory 5662510
Model 56625-10 
Action Striker Fired 
Caliber 9mm 
Capacity 10 
Barrel Length 4.5" 
Frame Finish Black 
Slide Finish Black 
UPC 812285026862 
SKU 2-ARM56625-10 
Ships Ships Within 1 to 3 Business Days After 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.
Typically ships within 5 to 7 business days when a valid FFL is received

A $16.95 handling fee will be charged per order. No additional charge for multiple firearms on an order.


The New Rock Island Armory STK100 Features a Patent Pending Clamshell Frame Design

The Rock Island Armory STK100 features all of the advantages of a metal frame for the price of a polymer frame. Striker-fired pistol fans rejoice at the latest offering from Rock Island Armory and Armscor. Starting with the slide a series of lightning cuts have been applied to the top and side in order to reduce the recoil impulse of the pistol. Additionally the rear sight sports a integrated fixed sight with a removable optic cover plate. Upon handling the STK100 you will immediately notice the 1911 style grip angle and extended beavertail which will be just like shaking hands with an old friend. The pistol features an anodized matte black finish.

Rock Island Armory STK100 (Black) Specifications and Features:

  • Rock Island Armory/Armscor 56625-10
  • Semi Automatic Striker Fired Pistol
  • 9mm Luger
  • 4.5" Barrel
  • 10 Rounds
  • Tenon Cut Front Sight with Retaining Screw
  • Fixed integrated Rear Sight on Optic Cover Plate
  • 3-7lbs Trigger Pull
  • 1911 Style Grip Angle
  • Lightning Cuts on Slide for Weight Reduction
  • Accessory Rail
  • Extended Beavertail
  • Patent Pending Clamshell Frame Design
  • Overall Length 7.91"
  • Overall Width 1.25"
  • Overall Height 5.16"
  • Overall Weight 1.80lbs
  • Aluminum Grips Integrated on Frame
  • Aluminum Frame
  • Anodized Finish
  • Matte Black
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.