I imagine back in the day or even now when they are full auto, they probably needed to stake them to keep from flying off. I looked at the Lyman sight and I'm definitely not shelling out that kind of loot for one. In the pictures it doesn't look much better than what I got really. If I see one in person I might change my tune. Like I say I don't hardly shoot it, just love to look at it and hold it sometimes. Good for upper body exercise if nothing else. Things are brutally heavy.