BLEM SRS™ MilSpec Buffer Tube Kit - AR15 GEN4-SRS-H2 weight

The Armaspec enhanced buffer tube kit contains all the necessary parts required to mount a stock assembly on to a lower receiver.. 

The buffer tube kit, contains a mil-sjec 7075-t6 6 position buffer tube, a steel castle nut and end plate  as well as a enhanced multi stage recoil buffer system .The Armaspec SRS