I was at the range a couple days ago and while shooting the dang selector popped off. Well both the pin and spring fell out and could never find it. Any help in finding these 2 parts would be greatly appreciated. All I can find on HKparts is to to buy the whole selector again or 60 bucks. Ugh Figured I’d check with the people to see if someone had one in their spare parts bin. God bless and thx.