USED Mission First Tactical Battlelink Extreme Duty Minimalist Stock AR-15 Mil-Spec 1.148 Diameter Receiver Extensions Black BMSMIL-EXD. 62X51 AR-10 while remaining nimble enough for use on a 5.56. Narrow chassis extends but maintains enough room to install a standard AR-15 buttstock. Buttstock features MFT's new polymer Battlelink Extreme Duty platform for the ultimate in functionality and strength. Rifleman Jim Kirkwood designed the stock and all other Mission First Tactical products so he knows it inside and out. Add the Battlelink extension and recoil pad for an even more robust stock even on larger caliber firearms such as 12 gauge and 7.62 X 51 AR-10. Specifications for Mission First Tactical Battlelink Extreme Duty Minimalist Stock AR-15: Manufacturer: Mission First Tactical Gun Model: AR-15 Gun Type: Rifle Additional Features: 1.148 Diameter Receiver Extensions Mil-Spec Hand: Ambidextrous Buffer Tube Size: Mil-Spec Package Contents: Mission First Tactical Battlelink Extreme Duty Minimalist Stock AR-15 What firearm models does the manufacturer say Mission First Tactical Battlelink Extreme Duty Minimalist Stock AR-15 is compatible with? The manufacturer says that Mission First Tactical Battlelink Extreme Duty Minimalist Stock AR-15 is compatible with AR-15Mission First Tactical BMSMIL-EXD: Battlelink Extreme Duty Minimalist Stock AR-15 Mil-Spec 1.148 Diameter Receiver Extensions Black