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Posted: 2/13/2015 12:36:14 PM EDT
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I have done some research and have been unable to find the answers, so I turn to the board.
What is the evolution / reasons for the colt bolt? What came first, wide band, narrow band, etc? What was the thought process that made them go from one band type to the other, and finally settle on the current "medium" band standard that we have now? Was one type more / less reliable? Also, when did they start to incorporate C-158 into the material of the bolt? Was it not until the M4 carbine came out, or did it happen earlier? I know the early bolts were made out of 8620 steel, and the M16 rifle length gas system was not too hard on bolts, so there was no real reason to switch to a stronger material under carbines started to become more prevalent. Anyone have a rough date range as to when the switch in metals was made though? Thanks! |
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Quoted:
Chrome MP thin band with no oil hole Chrome MP thin band with oil hole Chrome MP wide band with oil hole Parked MP wide band with oil hole Parked MPC wide band with oil hole Does anyone know why the change in band size? Narrow to wide to current "medium"? This must interest you in regards to function / reliability as to why certain changes were made? |
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Quoted:
Does anyone know why the change in band size? Narrow to wide to current "medium"? This must interest you in regards to function / reliability as to why certain changes were made? Quoted:
Quoted:
Chrome MP thin band with no oil hole Chrome MP thin band with oil hole Chrome MP wide band with oil hole Parked MP wide band with oil hole Parked MPC wide band with oil hole Does anyone know why the change in band size? Narrow to wide to current "medium"? This must interest you in regards to function / reliability as to why certain changes were made? I am very interested in why so many changes but other day than the knowledge of the first 5-6 types/changes I'm stumped. I'd love to know why all the changes but it has to do with function vs cost I would bet. |
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