BFSIII® Equipped FRANKLIN ARMORY® M4-Built Lower Receiver


The Franklin Armory M4 style complete lower comes equipped with the BFSIII binary trigger. The lower is forged 7075-T6 Aluminum with a type III black anodized finish. Other features include an M4 style stock, A2 grip, carbine length buffer tube, and includes one 30 round steel magazine.


  • Lower Receiver – Forged 7075-T6 Aluminum, Hard Coat Type III Anodized Black, Specialized Tension Screw – Eliminates Upper/Lower Play, FRANKLIN ARMORY® Binary Firing System® Trigger, A2 Pistol Grip
  • Magazine – Manufactured from Stainless Steel, Marlube Finished, 30 Round 5.56 NATO Capacity, 10/20 or 10/30 Magazine for Restricted States, Anti-Tilt Follower
  • Stock – M4 Design, Reinforced Six Position Collapsible, Multiple Rear Sling Mounts, Angled Heel for Easier Transition, Aluminum Carbine Length Receiver Extension
  • Additional Features – Comprehensive Safety Manual, California Certified Cable Lock


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