Magpul MAG1377ODG DT Carbine Stock Olive Drab Green Synthetic for AR-15, M16, M4 with Mil-Spec Tube (Tube Not Included)The DT Carbine Stock is a drop in replacement buttstock for AR15 M16 M4 carbines (or comparable platforms) equipped with Mil Spec profile receiver extensions. It merges the best features of the SL and CTR product lines with its new dual tensioning technology, which provides greater strength and security for a more rugged and stable platform that's easy to adjust. The DT Stock is an A frame style carbine stock that features an auto engaging friction