New Frontier Armory C-4 Billet AR-15 Stripped Lowers

New Frontier Armory C-4 AR15 Lower Receiver. Machined from aircraft grade 
Billet Aluminum, not forged and compatible with all standard AR-15 components 
and magazines.

Machined with enhancements such as:
    Machined from 7075-T6 aircraft grade billet aluminum
    Matte black hard-coat anodized per Mil 8625 Type 3 Class 2
    Precision broached magazine well with beveled feed lips
    Machined and engraved to be compatible with 45 and 60 degree short throw 
    fire control selectors such as the BAD_ASS ST 45 Lever
    Caliber marking of "Multi" so it can be used with many different caliber 
    uppers
    Compatible with all standard AR-15 components and magazines and most 
    aftermarket parts
    Take down pin spring and detent hole is threaded for a 4-40 set screw for 
    easy capturing (hardware included)
    Upper tension screw behind grip screw (threaded hole with hardware 
    included) to adjust any “slop” out of vertical fit between upper and lower
    Ambidextrous trigger finger rests with grooves (above and below mag 
    release / mag catch)
    Compatible with Norgon and other aftermarket ambidextrous mag releases
    Threaded bolt catch pin (Threaded hole and hardware)
    Integrated large opening "winter" trigger guard
    Manufactured to MILSPEC on state of the art CNC equipment for consistent 
    quality parts and exacting tolerances
    Save money by building your own AR-15 rifle from the ground up exactly the
    way you want it configured

in-stock