M777A2 Howitzer: Components,
Operation, and Maintenance Questions
and Correct Answers/ Latest Update /
Already Graded
Breech recess
Ans: The threaded portion that houses the breech block.
Gas check seat
Ans: An airtight sealing surface where the obturator pad
expands.
Swiss groove
Ans: Designed to retain propellant charges at all quadrant
elevations.
Powder chamber
Ans: The strongest portion of the tube, approximately 40
inches long.
Centering slope
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Ans: A tapered section that centers the projectile during
loading.
Forcing cone
Ans: Forces rotating bands into the rifling.
Lands and grooves (rifling)
Ans: Rifled section with 48 lands and grooves to impart spin.
Counterbore
Ans: Relieves stress at the mule end.zz
What type of brake system does the M777A2 utilize?
Ans: B. Air-over-oil power.
The recoil mechanism on the M777A2 is:
Ans: B. Hydro-pneumatic, constant dependent.
What is the nomenclature for the continuous-pull firing mechanism?
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