Rock Island Armory M1911 A1 GI Standard FS .45 ACP, 5-Inch Government-Size, Matte Dark Finish
This Rock Island Armory M1911 A1 GI Standard FS offers a government-size 5-inch .45 ACP platform with classic GI pattern features and a matte dark finish. It has smooth hardwood grips, GI-style fixed sights, and traditional 1911 controls. The pistol is in excellent condition and includes the factory case, manual, inspection certificate, and one 8-round magazine. Markings include APINTL–Pahrump, NV and ACP PHILIPPINES. Factory model number is 51421.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are minimal marks from prior handling and use. Please refer to the photos for close-up views.
What’s Included
- Rock Island Armory factory hard case with model label (GI Standard FS, 51421)
- Rock Island Armory pistol owner’s manual
- Factory inspection certificate card
- 1x 8-round single-stack steel magazine marked .45 ACP with numbered witness holes
The GI Standard FS configuration keeps the classic 1911 profile with a non-railed dust cover, arched mainspring housing, and a smooth front strap. It uses a standard barrel bushing and a closed-end recoil spring plug for a traditional assembly.
Controls are GI-style with a left-side manual thumb safety, grip safety, and a half-cock notch. The pistol is single-action, hammer-fired, and features a spur hammer along with smooth hardwood grip panels.
The slide has rear-only vertical serrations and fixed GI pattern sights, including a staked front blade and a fixed rear notch. The matte dark finish on both slide and frame complements the straightforward GI aesthetic.
Chambered in .45 ACP, this full-size government model has a 5-inch barrel and an 8+1 capacity. It is part of the GI Standard series and carries the factory part number 51421.
Markings include APINTL–Pahrump, NV and ACP PHILIPPINES, reflecting import and country-of-origin details. The pistol comes with its original RIA hard case, owner’s manual, inspection certificate, and one 8-round magazine.