The M4 Socom features an adjustable length of pull in 1/2" increments and is Approximately 6 times stronger than the original AR-15 folding stock design. Closed cell foam stock cover provides a comfortable shooting position, and 4 separate 1-1/2" sling attachment points offer complete ambidextrous flexibility in carry options. Buffer and spring not included. The weight of this stock is approximately 16-1/2 oz. Not designed for use with cartridges producing heavier recoil than 7.62x39mm Russian.