Hi MVP shooters, this extended mag release is for the MVP line up in 223/556 caliber. Its a drop in part that requires minimal time, but does require you to remove your action. These are made from 6061 T6 aluminum. They have a black anodized finish then a Mil spec hard coating over that. All of our parts are made in the USA and will stay that way. If you are interested in this part please send me a pm. These are 45 dollars shipped to your door in the US. I can ship out as well and can give shipping quotes.