Franklin Armory BFSIII M4 Complete AR-15 Lower, M4 Stock

Franklin Armory 00-20016-BLK: This binary trigger equipped Franklin Armory lower is the perfect foundation for any rifle build. The forged 7075 T6 aluminum lower provides more than enough strength to handle the binary trigger’s faster rate of fire. This lower would be a great starting point for a military M4-inspired carbine since it already comes with a Mil-Spec 30-round steel magazine, a familiar A2 pistol grip, and a classic M4 carbine stock. The finish is the tried and true Type-III Hard Coat Black Anodized finish, which is excellent for corrosion and wear resistance. Franklin Armory thought of everything and built this lower receiver with a specialized tension screw. This feature eliminates the dreaded wobble between the upper and lower receiver. So no matter which upper receiver you decide to go with, you will have the perfect fit. While all these features make this lower great, the ultimate highlight has to be the BFSIII Binary Trigger pre-installed and tested at the factory!

Please see extended description for complete details on the BFSIII Binary Trigger. 

The Binary Firing System from Franklin Armory is a 3-position curved trigger featuring user-friendly operating positions to switch from safe, semi-auto, and binary. The BFSIII, operated in position 3 (binary), makes it the fastest semi-automatic trigger on the market, firing one round on pull and another on release.  The BFSIII trigger is ideal for any shooter as it requires no proprietary bolt carrier group and functions with any standard Mil-Spec full auto BCG which is the standard for most BCG’s on the market today. The BFSIII provides incredibly reduced split times between rounds, allowing for tighter groups on target and a higher volume of rounds downrange. 

Position 1 – Safe –Will not fire

Position 2 – Semi – Fires 1 round per pull

Position 3 – Binary – Fires 1 round on pull and 1 round on release

*Release round can be canceled by simply moving our Patent Pending selector out of Binary mode while holding the trigger back

* Easy to install

* Smooth trigger pull: 4.5 lbs, +/- 0.5 lbs

* Positive reset on release phase

* Enhanced buffer springs for optimal flexibility

* Compatible with any BCG!! 

* Great for competition shooters, tactical shooters, and recreational enthusiasts