JE Machine Tech PS-BFSC4 AR-15 .223/5.56 Stabilizer Buffer System V2 - 4140 Steel

The JE Machine Tech PS-BFSC4 is a .223/5.56 Stabilizer Buffer System (V2) engineered as a drop-in replacement for the traditional AR-15 buffer and recoil spring assembly. Constructed from high-strength 4140 steel, this self-contained unit consolidates the buffer body and recoil spring into a single sealed assembly designed specifically for AR-platform rifles chambered in .223 Remington or 5.56 NATO.

Rather than relying on a conventional buffer-and-spring pair, the PS-BFSC4 combines both elements into one unit intended to reduce felt recoil and smooth the action cycle. It installs in place of the factory buffer and spring with no permanent modification required to the buffer tube, bolt carrier group, or lower receiver. JE Machine Tech recommends pairing this stabilizer system with a lightweight BCG, a quality muzzle brake, and an adjustable gas block to keep cycling smooth and service life long.

The PS-BFSC4 is a practical recoil-system upgrade for AR-15 builders looking to simplify the lower-receiver internals while maintaining reliable function on the range or in the field.