Armscor/Rock Island Armory 51400 | Rock Standard 1911-A2 | 9mm

The Armscor/Rock Island Armory Rock Standard 1911-A2 FS (MFG# 51400) is an optics-ready 1911-style semi-automatic pistol chambered in 9mm with a 5″ barrel and a 17+1 capacity. It pairs a fully parkerized steel frame and slide with G10 grips, an RMSc optic already mounted, a magwell for faster reloads, and co-witness height sights. This configuration suits practical competition shooting and focused range training. For shooters who want a dedicated reflex sight under $1,000, a compact option such as the Holosun 507K pairs well for fast sight acquisition and low-profile co-witnessing.

Product Specifications

• The UPC is 4806015514008.
• The manufacturer is Armscor/Rock Island Armory.
• The model or MFG# is 51400.
• The caliber is 9mm.
• The action is Single Action.
• The capacity is 17 + 1.
• The barrel length is 5″.
• The overall length is 8.75″.
• The weight is 3 lbs..
• The frame is Steel Frame.
• The finish is Fully Parkerized Frame & Slide.
• The grip material is G10 Polymer Grips.
• The optic is RMSc Optic Mounted.
• The sights are Co-Whitness Height Sights and listed as Fixed Sights.
• The package includes 1 17 rd. magazine.

This Rock Standard 1911-A2 FS delivers a load-bearing 1911 platform with modern enhancements for shooters who prefer a steel-frame feel and optics-ready ergonomics. The combination of a 5″ barrel, extended capacity, G10 grips, and a magwell makes it well suited to competitive stages and deliberate range practice where control and follow-up speed matter. Its parkerized finish and steel construction provide a durable baseline for regular use and customization.

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