Knights Armament Upper Available In Stock
Knights Armament Upper: Looking for the perfect lower to start your next bombproof build? The Knight’s Armament SR-15 IWS Complete Lower Receiver is designed to provide AR aficionados with all the elements they need to construct their next go-to defensive rifle.
Each Knight’s Armament SR-15 IWS Complete Lower Receiver is built from forged aluminum and are built with the company’s own safety selector, magazine release and bolt release, all fully ambidextrous. The lower is also equipped with the company’s unique KAC 2 Stage match trigger.
- Black finish
- Caliber-marked for 5.56 NATO
- Equipped with 4.5-pound trigger
- Ships with Magpul MOE SL-S Carbine Stock
Each Knight’s Armament SR-15 IWS Complete Lower Receiver ships with a complete stock and six-position buffer tube.
FFL Restriction
You must be 18 years of age or older to purchase rifles and shotguns, and 21 or older to purchase handguns, receivers, frames, and also suppressors. Minimum age requirements may vary by state. Check your state and local laws before ordering. It is your responsibilty to fully understand the laws in your area and also to ensure that possession of this item would not violate any applicable state or local laws.

FAQ On Upper Receiver
- What is included in a complete upper receiver?
The upper receiver is the top portion of your AR-15 and contains the barrel, forend, bolt carrier group, charging handle, and any AR accessories you want to mount on rails, such as a scope.
- Does upper receiver require FFL?
No! AR upper receivers are “NOT” considered a firearm. It’s the lower receiver that’s the firearm along with it’s serial number which makes it so. Buying a complete lower receiver, however requires an FFL for purchase or (transfer in some states).
- What is the main purpose of the upper receiver
The receiver could be considered the “heart” of the firearm. The upper and lower receivers are simply the two halves of a receiver in the AR-15/M-16 family of firearms. In a two-piece type firearm, the upper carries the barrel and the bolt, while the lower carries the firing mechanism and the magazine.
FAQ On Knights Armament
- Does the military use knights armament?
History. The United States military, as well as other special forces and police around the world, use KAC RIS/RAS conversions for many popular firearms, including the American M16/M4 rifles and also the popular Heckler & Koch MP5 series submachine guns.
- Who is the owner of Knight’s Armament Company?
C. Reed Knight Jr
Founded by C. Reed Knight Jr to focus on the needs of U.S. Special forces, we have since evolved into a premier weapons manufacturer offering complete weapon systems, modular accessories and Knight Vision electro-optics.
- Do Navy SEALs use knights armament
Mk 11 (SR25) – 7.26x51mm Medium Sniper Rifle
The Mk 11 (SR25) is a semi-automatic, medium sniper rifle, used by Special Forces operations such as the Navy SEALs and Delta Force, as well as regular military. It’s also used by US Marine scout snipers, and is manufactured by Knight’s Armaments.
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