Evil Monkey
member
- Joined
- Jun 26, 2006
- Messages
- 1,486
I once asked why a multi lugged bolt like the ar15/ar18 bolt would be used over a typical heavy duty 2 or 3 lug bolt and the answer was because the multi lugged bolts rotate/lock sooner.
After thinking about it for a while, I thought maybe I was missing the point. Why is it neccessary for a bolt to have the least amount of rotation as possible?
I try and rationalize why a mutli lugged bolt is desirable but I'm not satisfied.
With 2 lug bolts, they need a longer rotation period to lock in place. So the carrier is machined with a long cam track. The reason it must be long is because if the angle of the track is too sharp, the carrier may have a hard time rotating the bolt into its locking position. The only "problem" I can see is that this makes the bolt face-to-carrier rear length long, thus needing a longer receiver for proper cycling. But this is hardly a big deal.
The 7 lug bolt has a very short cam track with hardly an angle, thus allowing the carrier to be short and allow for a shorter receiver.
What the hell!? This can't be it! It's too simple! There has to be more that I don't know. There's a reason why the AR18 is the most copied system with the same old 7 lug bolt and I can't figure it out.:banghead:
After thinking about it for a while, I thought maybe I was missing the point. Why is it neccessary for a bolt to have the least amount of rotation as possible?
I try and rationalize why a mutli lugged bolt is desirable but I'm not satisfied.
With 2 lug bolts, they need a longer rotation period to lock in place. So the carrier is machined with a long cam track. The reason it must be long is because if the angle of the track is too sharp, the carrier may have a hard time rotating the bolt into its locking position. The only "problem" I can see is that this makes the bolt face-to-carrier rear length long, thus needing a longer receiver for proper cycling. But this is hardly a big deal.
The 7 lug bolt has a very short cam track with hardly an angle, thus allowing the carrier to be short and allow for a shorter receiver.
What the hell!? This can't be it! It's too simple! There has to be more that I don't know. There's a reason why the AR18 is the most copied system with the same old 7 lug bolt and I can't figure it out.:banghead:
