The AR-STONER Deluxe Collapsible Stock Kit is perfect for upgrading an existing AR-15 to a carbine collapsible stock system, or building a new carbine rifle. This assembly is machined to exacting standards to provide excellent fit, reliable function, and performs in the harshest conditions. Rest assured the high-grade, impact extruded, 7075-T6 aluminum Mil-Spec Buffer Tube is perfect for upgrading an existing or building a new AR-15 or LR-308. This buffer tube is machined to strict military standards to provide an excellent fit and reliable function. This buffer tube is machined from 6061-T6 aluminum and given a hard coat anodized finish to withstand years of abuse. The buffer spring has also been upgraded to a stainless steel unit for corrosion resistance in harsh environments.The Magpul DT-PR stock is the Precision Rifle (PR) variant of the Dual-Tension (DT) series of carbine stocks. It incorporates Magpul's proprietary, patent-pending DT adjustment system, mitigating play between...