Why are aftermarket trigger guards so expensive? For the Rem. 700, there are many that are $200-$300? I know that on some Remington models, such as many ADLs, the guard is polymer/plastic and an upgrade makes sense but what justifies the cost of these i see at Midway and Brownells? The material and labor cant possibly justify it-Is there some great benefit that makes up for the rest of the cost?