Rock Island Armory M1911 A1 GI Standard FS Nickel .45 ACP, 5 Inch Government-Size, Series 70 Pattern with SIG SAUER Grip Panels
This Rock Island Armory M1911 A1 GI Standard FS Nickel is a full-size .45 ACP Government-pattern pistol with a factory nickel finish and Series 70–pattern design. It features a 5 inch button-rifled barrel, GI sights, and an aftermarket set of textured SIG SAUER medallion grip panels that set it apart. Clear factory markings, GI controls, and a standard GI recoil system round out this clean, purpose-built 1911.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Overall Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Details: Minor superficial scratches and blemishes are present on the exterior surfaces.
What’s Included
- 1x 8-round single-stack .45 ACP 1911 magazine marked '.45 ACP'
- Textured SIG SAUER-medallion grip panels (installed)
This GI Standard FS Nickel model delivers the classic 1911 profile with a nickel-finished 4140 steel slide and frame, a 5 inch button-rifled barrel, and an 8+1 capacity. It is built on a Government-size, single-stack 1911 platform and retains the Series 70–pattern design for a traditional operating system.
Period-correct GI details include fixed GI sights (narrow staked front blade and fixed rear in a dovetail), rear-only vertical slide serrations, a spur hammer, and a solid trigger with a serrated face. The standard GI recoil system uses a short guide rod and checkered plug, staying true to the classic setup.
Controls and safeties are straightforward and familiar, with a left-side thumb safety and a grip safety. Factory markings are present: the slide carries the Rock Island Armory crest/logo, the model is marked "M1911 A1 - FS," and the barrel hood is marked "CAL. 45 ACP." Import and proof marks include "APINTL-PAHRUMP NV" and "ACP PHILIPPINES," reflecting its Philippine manufacture.
This pistol is customized with textured SIG SAUER grip panels bearing SIG SAUER medallions, adding a distinctive look and secure in-hand feel. It comes with one 8-round .45 ACP magazine noted as marked ".45 ACP."

