carbines are triatomic modifications of cabon mainly found in space and comets
Anthony Carbines was born on 1973-06-15.
Elaine Carbines was born on 1957-02-04.
The rifling is there to spin the bullet, which gives greater accuracy.
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There is a lot less resistance with the polygonal rifling. More over, if the polygonal rifling is chrome lined, the walls of the barrel are completely slick and offer less resistance. The projectile, the bullet, goes way faster. IDPA estimation here in the US are 10-30% faster.
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No, they weren't.
When rifled, the rifling tool cuts the GROOVES. Material left between the grooves is the LANDS.
The rifling in a firearm is designed to cause the project (bullet) to spin, increase stability and accuracy.
Possibly. There is mention of a black oxide finish on early carbines that resembled bluing more than Parkerizing. Winchester referred to it as Du-lite. All carbines were made with SOME blued parts.
No. M1 carbines were made semi-auto only. M2 carbines had a selector lever for simi-automatic or full automatic. Iver Johnson never made M2 carbines.