Long or full-length rifle with a 30-32 inch barrel:
(1) with a bayonet became a substitute for a pike against cavalry
(2) greater accuracy at long distances
(3) heavier
(4) more difficult to maneuver in a confined space
Carbine with a 17-20 inch barrel:
(1) shorter and more compact, suited for riding on horseback
Universal short rifle with a 24-26 inch barrel
(1) lighter
(2) benefits of a full-length rifle no longer relevant
With bullpup and other designs the barrel length is longer than it first appears because the receiver is placed back in the gun and only a small part of the barrel protrudes from the housing.
Concerns:
(1) weight
(2) ability to maneuver in a tight space
(3) accuracy
(4) overheating
