Posted: 8/6/2005 4:51:40 AM EDT
| pros and cons thinking about my hks and m11 already put in 10-22 |
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A lot of folks view them as cheap insurance. I view them as novelty accessories in most cases. They're particularly useless in AKs, where they're supposed to cushion the blow of the bolt-carrier hitting the rear trunion. .... except ..... the bolt-carrier doesn't ever hit the rear trunion. It shouldn't ever get close to coil-bind. If it does, you need a new recoil spring, rather than some polyurethane inserted behind the faulty spring. If folks have modified their firearms, or like to hotload their ammo into orbit ... that's a different story. In general, a mechanical engineer selected a spring that would cycle the reciprocating mass without bottoming out or binding up, and then allowed a comfortable margin of error. It should 'oscillate' without ever needing to be 'buffered'. Drawcut's an M.E. ........ drag him into this. 
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Man, I'm gone for few days and my name gets dropped.  Yes I'm an M.E., but not a firearms designer. My 2 cents: Some designs will operate with the bolt / bolt carrier striking something solid in the back of the reciever - like the above mentioned 10-22. I have a buffer in mine also and the difference is noticable. In other designs, things should never come close to metal on metal contact. I don't know of any designs that would let the recoil spring go solid before something else hit, but I could be wrong. I haven't looked at the M11 or HK designs in a long time, so I really couldn't say for sure. My guess would be that the M11 might benefit since it has a pretty simple design - but that's just a guess. I think I may need to shoot both for further study.  Edited for some clarity. |