The Knights Armament SR-15E3 Carbine MOD 2 is a 5.56 NATO/223 Rem rifle featuring a 16” hammer forged chrome-lined barrel with a 1:7 twist. Rifles includes the new URX4 13.5” Keymod rail system with integrated flip-up sights. The SR-15 also comes with a telescoping SOPMOD stock and one magazine. The Stoner Rifle 15 series are semi-automatic rifle featuring the URX (upper receiver extending) free floating barrel system, an ambidextrous control system, a two-stage trigger, an improved multi-lug E3 bolt and integral front sight and sling mounts. The SR-15E3 features multi-lug improved E3 Bolt assuring reliability and function of the rifle.
The Knight’s Armament Company SR-15 line represents the pinnacle of firearms based upon the Eugene Stoner designed operating system. The Mod 2’s 16” chrome lined, 5.56mm NATO barrel is manufactured to military specifications, and features a proprietary mid-length gas system that increases reliability and durability while also reducing felt recoil. An improved E3 round-lug bolt design both enhances function and increases bolt life far beyond the industry standard. An ambidextrous bolt release, selector, and magazine release offer left-handed users the ergonomic advantages inherent to AR15-based controls, as well as giving right-handed users alternative methods of manipulation to increase efficiency of movement. The drop-in two-stage trigger serves double duty as an aid to long range precision marksmanship while enabling surgical speed shooting at close range. The Mod 2 update introduces several notable features to the SR15 IWS line: a URX4 handguard with Keymod accessory mounting points for-ancillary device attachments increases cooling characteristics and reduces weight and bulk compared with standard 1913 rail attachment methods. A Mod 2 gas system with a proprietary design minimizes leakage and ensures more consistent operation in harsh conditions. A gas block secured with a locking ring instead of taper pins increases barrel rigidity and eliminates the need to custom fit the gas block to the barrel. Included parts and features, such as the two-sided receiver end plate QD sling swivel mounting point, collapsible six-position SOPMOD stock, hybrid ambidextrous selector lever, and folding 200-600 meter sights, round out the package to deliver a cutting-edge carbine right out of the case.
Knight’s Armament employs a hammer-forging process on a number of there barrels and chambers, which serves to increase the quality of their interior finish, as well as increasing the durability and life of the barrel. These barrels are then Chrome-lined to further the lifespan of the barrel and increase its resistance to fouling and corrosion. (Read More)
E3 Enhanced Bolt:
The E3 Enhanced Bolt from Knight’s Armament features a number of components designed to make this bolt the most durable and reliable bolt available. It is a proprietary bolt specifically designed for our SR15 and 16 models. The E3 Bolt boasts several features that add to the its overall performance such as the enlarged bolt face, rounded lugs, reduced cam pin, and proprietary extractor and firing pin designs. (Read More)
Knight’s Armament designed this system to give shooters the maximum amount of options in their controls. Under this design all of the weapon’s major controls can be accessed from either side of the lower receiver. Left-handed shooters see the immediate benefits of being able to access the weapon’s controls in a more intuitive manner; however, there are a number of other benefits that right-handed shooters will enjoy under this system. (Read More)
Two-Stage Match Trigger:
All of the weapons available from Knight’s Armament come equipped with a 4.5lb, 2-Stage Match Trigger. This type of trigger mechanism uses a system where, during the rearward squeeze of a trigger, it cycles through two stages of resistance. (Read More)
Universal Keymod Rail Extending (URX4):
The URX 4 is a continuous top-rail system that utilizes the Keymod mounting brackets developed by Vltor and Noveske. This rail system is built stronger and more stable than previous designs due to the absence of a removable bottom rail. The modular layout allows an end user to fully customize exactly where to place accessories without the use of specialized tools, small parts, or additional forces applied to the barrel. (Read More)
Quick Detach Coupler:
The Quick Detach Coupler (QDC) line of Sound Suppressors and Muzzle Devices are proprietary items designed for secure interoperability. The coupling device itself consists of multiple ball bearings arrayed in a circular pattern which fit into sockets specifically machined into various muzzle devices to accept the QDC. The bearings are aligned with the sockets by way of a V-shaped notch that seats the device onto an index pin. Once aligned, a simple twist of the outer retaining ring locks the device securely into place. (Read More)
7 Integrated Sling Swivel Mounts: 5 at Front, 2 on the Rear
Integrated Rail Folding Front Sight
Ambidextrous Safety / Selector
Integrated "Picatinny Rail" Mid-Length URX Forend
Ambidextrous Bolt Catch
Removable Mid-Length Lower Rail
Ambidextrous Magazine Catch
Mid-Length (Battle Rifle) Gas Tube
Hammer Forged 1:7" Twist Chrome Lined & Bore Barrel
Gloved Finger Trigger Guard
SOCOM Type Sloping Cheekpiece Adjustable Length Stock
Two Stage Match-Trigger (4.5 lbs)
Weight: 6.6 lbs
Length: 33” (Stock Retracted)
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Submitted By: Mike T. On 06/30/2013
I've done my research on ARs and during the present political climate, it was the a good time to wait until now. This will be my first AR. Too many reasons to list why I chose this from LaRue or Noveske. All solid options though.
[4 of 5 Stars]
Submitted By: Larry I. On 05/18/2013
I was very pleased with the accuracy of this rifle. I haven't found a round that it doesn't like and it puts them down range with reliable accuracy. After owning several other AR-15's I believe that I have now found the one that I am totally satisfied with.
[5 of 5 Stars]