Bayonet moves point of impact

[Charlie303]

Sorry CalTex, I didn't address your last question. The M1 and M1905E1 bayonets lock on the rifle using the same system and all appear to be exactly the same when mounted, a bit loose and wobbly.

As to why both the M1905E1 bayonets raise the POI, it may be the steel used. I'm no metal expert but both M1905E1 blades appear to be made of better quality steel and the finish is much better than the standard M1. The quality of the steel may be superior possibly due to them being cut down from a longer original bayonet which required a better steel. This may be having an affect on the harmonics of the barrel/bayonet when fired.