Ruger 90747 LOP Spacer Kit — Ruger American Gen2

The Ruger 90747 Length-of-Pull (LOP) Spacer Kit provides a simple way to tailor the fit of Ruger American Rifle Generation II stocks. The kit includes replacement spacers to change the rifle’s existing length-of-pull, improving shoulder placement and sight alignment for a range of shooters. Spacers are constructed of durable polymer and install by replacing the recoil pad assembly. Changing spacers is straightforward with common hand tools and does not require permanent modification to the stock.

Key Specifications

• The kit is made from Polymer for lightweight durability.
• Designed to fit Ruger American Gen2 stocks.
• The included spacers provide a 12.75″ length-of-pull when installed.
• The included spacers provide a 13.25″ length-of-pull when installed.
• The rifle ships with a 13.75″ spacer installed (reference for installed spacer).
• Only one spacer can be utilized at a time; spacers cannot be stacked.
• Changing spacers requires a 3/16″ hex wrench and a 7/16″ socket or wrench.
• Loosening the rear swivel stud requires a 1/8″ hex wrench or similar tool.
• Finish color is Black.
• Product type is Accessory and model is LOP Spacer Kit.

This spacer kit is a practical, no-nonsense solution for shooters who want to optimize rifle fit without altering stock geometry. Its polymer construction and straightforward installation make it a convenient upgrade for hunting, range use, or general field carry where consistent shoulder placement and sight alignment matter. The kit’s spacers give measurable, repeatable adjustments so users can set a comfortable, ergonomic length-of-pull tailored to their shooting stance and gear.