I am interested in finding a replacement stock for my optima mp pump action shotgun where are they available? do remington stocks fit? the length of pull is about an inch too long on my factory stock. and i dont want to atempt to cut a plactic stock. would love something with an adjustable LOP and a good recoil pad. the long LOP gets worse if i wear any kind of jacket and it hurts my shoulder to fire it this way. please help me.