M1156 Precision Guidance Kit

The M1156 Precision Guidance Kit (PGK), formerly XM1156, is a U.S. Army-designed precision guidance system to turn existing 155 mm artillery shells into smart weapons. The prime contractor was Alliant Techsystems – later merging with Orbital Sciences Corporation to form Orbital ATK, in turn being taken over by Northrop Grumman and renamed Northrop Grumman Innovation Systems – and the industry team includes Interstate Electronics Corporation. By April 2018, more than 25,000 PGKs had been produced.

M1156 Precision Guidance Kit
Diagram of XM1156 alongside standard fuse profile
TypeGPS-guided artillery fuze kit
Place of originUnited States
Service history
In serviceSince 2015
Used by
Production history
DesignerAlliant Techsystems
Designed2007–2013
ManufacturerNorthrop Grumman Innovation Systems
Unit costUS $13,541
ProducedSince 2013
No. builtOver 100,000
Specifications
Length
  • 8.67 in (220.2 mm) overall
  • 3.75 in (95.25 mm) visible
  • 4.91 in (124.7 mm) intrusion
Detonation
mechanism
Impact and proximity-detonation functions
Guidance
system
GPS
Steering
system
Four fixed canards
AccuracyCEP of less-than 30 m (98 ft)
Launch
platform
ReferencesJanes
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