I installed a Bold Optima trigger with side safety on my 1936 Radom 98 Mauser. The trigger is great but takes a little work to get it in. There are three things that have to be ground down for a fit. The stock has to be wider for the side safety, the bolt shroud has to be ground a hair to slide past the safety, and the top of the trigger plate noched out for the Bold trigger to fit. I used a Dremel for all. Now off to the range.