KAC SR-25 E2 Series Complete Ambidextrous Lower Receiver – 7.62 NATO
This factory-built Knights Armament SR-25 E2 lower receiver gives you a ready-to-install foundation for a 7.62 NATO/AR-10 build. It ships with KAC’s fully ambidextrous control suite and a factory-tuned two-stage match trigger, features rarely found together on a commercial SR-25 lower. Built from 7075-T6 aluminum and finished in a matte black hard-coat anodize, it carries forward the heritage of the Mk 11 and M110 platforms in a modern, user-friendly package.
Condition
Overall Condition: Very Good
Bore Condition: Bore is clean and shiny.
Minor superficial scratches and blemishes are present on the exterior surfaces, but nothing that affects function or fit.
What’s Included
- Original box
The E2-series lower incorporates ambidextrous magazine release, bolt catch, and safety selector levers, making all primary controls accessible from either side without aftermarket parts.
KAC’s proprietary two-stage match trigger breaks at approximately 4.5 lb and is factory installed and tuned, offering a crisp, repeatable pull that is not sold separately.
The receiver body is CNC-machined from 7075-T6 aluminum and protected by a mil-spec Type III hard-coat anodize in matte black, matching KAC’s current production uppers and accessories.
Compatibility follows the SR-25/AR-10 pattern, allowing the lower to mate with most large-frame DPMS-pattern upper receivers as well as KAC factory uppers chambered in 7.62×51.
A Magpul MOE pistol grip comes pre-installed, providing a familiar grip angle and internal storage core while keeping overall weight low.