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Data updated: 06 Mar 2026.
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Document ID:
MIL-DTL-48557
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Overview
Title:
Mount, Telescope and Quadrant - M171A1
Scope:
This specification covers the Mount, Telescope and Quadrant: M171A1 which supports the Telescope, Panoramic: M137A2 and Quadrant, Fire Control: M17A1 for use on the M777 and M198 series of howitzers. The mount provides adjustments in pitch and compensates for angles of cant when laying the guns for indirect fire.
Status:
Active
Document Date:
03-MAR-2023
Next Review Due:
01-MAR-2028
FSC/Area:
1240
Doc Category:
Detail Specification
Responsibilities
Lead Standardization Activity:
AR
US Army Combat Capabilities Development Command, Armaments Center
Preparing Activity:
AR
US Army Combat Capabilities Development Command, Armaments Center
Coordination:
Limited
Army Custodian:
AR
US Army Combat Capabilities Development Command, Armaments Center
Amendments to military specifications or specification sheets issued after August 1, 2003 are incorporated in the modified document.
Revision History
Click on column headings for a description of column content.
Media
Document Part Description
Dist Stmt
Document Date
Pages
Size
Revision B Notice 2 - Validation
A
03-MAR-2023
1
1.9 KB
Revision B Notice 1 - Validation
A
08-SEP-2017
1
1.9 KB
Revision B
A
09-SEP-2012
20
414.3 KB
Revision A
A
15-MAY-1990
23
333.9 KB
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Defense Standardization Program
WARNING: UNAUTHORIZED ACCESS TO THIS UNITED STATES GOVERNMENT COMPUTER SYSTEM AND SOFTWARE IS PROHIBITED BY PUBLIC LAW 99-474 (THE COMPUTER FRAUD AND ABUSE ACT OF 1986) AND CAN RESULT IN ADMINISTRATIVE, DISCIPLINARY OR CRIMINAL PROCEEDINGS.