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Knights Armament Company AR-15 Semi Auto SR-30 IWS Lower Receiver Kit .300 BLK Ambi Controls Match Trigger LMT SOPMOD Adjustable Stock Aluminum Black 31742

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Knight's Armament Co
Ships from Warehouse 2
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.
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  • Purchasing a Firearm Online
Knights Armament Company has been a premier weapons development and manufacturing company for over 30 years. Their advanced weapons systems are designed to meet the needs and demands of US Special Forces, military and law enforcement all over the world. They are one of the largest small arms manufactures in the US, consistently developing new and innovative weapon systems and accessories. When second best just isn't good enough, turn to KAC!

The KAC SR-30 IWS Lower Receiver for .300 Blackout is ready to become your next suppressed "Go To" hunting and competition AR! Knights Armament is considered by some to be the preeminent small are manufactures of AR style rifles in the world, and with good reason. With a reputation for quality consistency and durability that is second to none, you know that you can count on your Knights rifle to perform! This complete lower receiver assembly kit is ready for any Mil-Spec upper, and would be the ultimate upgrade for any AR15 enthusiast. It features ambidextrous controls, an LMT SOPMOD tactical stock and a 4.5 pound match grade trigger. The receiver is crafted from solid aluminum with a hard black finish, so you know this lower is built to last! Get a Knight's lower, take your AR to the next level and beyond!

Specifications and Features:
Knights Armament Company 31742
AR-15 Semi Automatic Lower Receiver
SR-30 IWS Complete Lower Receiver Kit
.300 AAC Blackout
Ambidextrous Controls
Knights 4.5 lb Match Grade Trigger
LMT SOPMOD Collapsible Stock

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.
  • Pick up your firearm from the FFL Dealer, who will need to do a 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 background check. 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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