Assertion: heavy barrel | /r/HasProperty | added at the request of the navy
Facets:
Source sentences:
text: The Model 590A1 has an aluminum trigger guard and safety, a heavier barrel, and a bayonet lug (although some versions of the 590 also have bayonet lugs), intended for military use under extreme conditions and rough handling; the metal trigger guard was added in response to the 3443G materials requirements, and the heavy barrel was added at the request of the Navy to prevent barrel deformation if the shotgun caught in the closing of heavy steel ship doors.