This is a rifle or A2 length tube, there is no commercial variant for rifle tubes.
The 308 rifle buffer will be 5.30" long end to end.
The Luth-AR rifle buffer tube is 10 1/8" out side end to end.
The Luth-AR .308 Rifle Buffer Tube Assembly will fit and function with an Aero Precision M5 rifle and will work with the MBA-1 Carbine Buttstock which is designed to fit A2 buffer tubes.
The Luth-AR .308 Rifle Buffer Tube Assembly can be used with an Aero Precision M5 Lower.
The Luth-AR .308 Rifle Buffer Tube Assembly will not be compatible with the Magpul PRS Lite Stock.
No. The Luth-AR .308 Rifle Buffer Tube Assembly includes:
(1) .308/7.62 Buttstock Extension Tube
Material: 6061-T6 Aluminum
Finish: Hardcoat Anodized Black
(1) Standard .308/7.62 Buttstock Buffer Spring
(1) Standard Buffer Body Assembly 5.3 oz
Yes, it will work with the M5E1.
Yes, this will work with the Magpul PRS.
Yes, it will.