Gary,

You have two I know C310pilot has one on his L4 build. I got a SA for use on my MK II so I could use 7.62 x51 ammo. Nowhere near a real L4 conversion.

I keep an eye out for reasonably priced .303 & 7.62 x51 non corrosive and boxer primed for reloading. That 7.62 x 54 r is really cheap but I hate having to clean the barrel & gas system every time I use it.

Joe