Yes. If it’s milspec
The Kaw Valley Precision AR-10 6 Position CAR Stock Completion Kit includes a 7.25" carbine length buffer tube, 5.6oz buffer, carbine recoil spring, castle nut, and end plate.
Yes, this Kaw Valley Precision AR-10 6 Position CAR Stock Completion Kit will be compatible with your .308 AR rifle. Some tuning may be required to achieve optimal reliability and functionality. Email us at Techsales@opticsplanet.com if you have any further questions.