Will this mount fit on the H&K/Walther MP5SD model? This is the one with the fat can looking barrel cover and the larger hand guards.
I do not know if it will fit your H&K/Walther, I purchased it for a Saiga 762x51. It works very well on this rifle. The mount stays solid on that rifle even with the heavy recoil. I should work on yours. Sorry I cant be more helpful.