sling plate adaptor on RAP4(trinity) normal carbine stock buffer tube

does anybody knows if this plate that trinity sells http://www.trinitypaintball.com/ProductDetails.asp?ProductCode=TR+837 fits on the common bufer tube http://www.trinitypaintball.com/ProductDetails.asp?ProductCode=TR+785 because i dont know how it will stay there since the real m4 buffer tube has a lock-down nut were you can put the plate and tighten it , i have seen also this http://www.rockstartactical.com/Metal_Replacement_Tube_for_Adjustable_Stocks_98_p/mil-tube-98.htm but they dont ship to Mexico and i cant find that anywere else

NOt sure myself but it looks like it might, and if nothing else you can always mod it to fit as well.