The ACE Gen 4 M4 SOCOM Stock features an integral buffer tube, which allows adjustable length of pull in five 1/2" increments, and is approximately 6 times stronger than the original AR-15 collapsible stock/buffer tube design. A closed cell foam stock overtube cover provides a comfortable cheek weld. The stock offers 4 sling attachment points for ambidextrous flexibility in carry options, including a dual loop ambidextrous-style mount integrated into the receiver end plate, and 2 machined 1-1/2" sling loops. Buffer and buffer spring not included. Stock weight is approximately 16.5 oz.