RUGER 28502 AR-15 LOWER STRIPPED 250TH ANNIVERSARY

The Ruger AR Lower 250th Anniversary (28502) is a stripped AR-15 pattern lower receiver machined from 7075-T6 forged aluminum, built to mil-spec dimensions and finished in hardcoat anodize, designed for custom AR-15 builders who want a precision-machined foundation with a limited-edition commemorative mark built in. This stripped AR-15 lower receiver is a capable tool for home builders, collectors, and enthusiasts who want to start their next multi-caliber AR platform build on a Ruger-quality component.

Key Features

• Part Number: 28502
• Compatible With: AR-15 pattern uppers and mil-spec components, multi-caliber configuration
• Material: 7075-T6 forged aluminum
• Finish: Hardcoat anodized, black
• Dimensions: Machined to mil-spec tolerances throughout
• Rollmarks: Hebron, Kentucky manufacture
• Receiver Engraving: "Made in the 250th Year of American Liberty" on left side of receiver
• Condition: Stripped, no fire-control group, stock, or grip included

Special Features

• Machined from 7075-T6 forged aluminum, the same alloy specification used in mil-spec military production, giving this lower the material strength to hold up to hard use across a long service life.
• An adjustable tension screw is built into the lower to minimize or eliminate play between upper and lower receivers, a common upgrade builders add separately on standard mil-spec lowers.
• Mil-spec machining dimensions ensure this lower accepts standard AR-15 fire-control components, pistol grips, buffer tube assemblies, and lower parts kits from any mil-spec compatible manufacturer without fitting or modification.
• Commemorative left-side engraving marks this as a limited-production 250th Anniversary variant, distinguishing it from the standard non-commemorative Ruger AR lower produced alongside it.
• Hebron, Kentucky rollmarks reflect domestic manufacture, making this lower a fully American-made foundation for your build.

Practical Benefits

• Because this lower ships stripped, you choose every component that goes into your build, from the trigger group and grip to the stock and buffer system, giving you complete control over the finished rifle's fit, feel, and function.
• The adjustable tension screw saves you the cost and effort of sourcing an aftermarket receiver wedge or tension device, a detail that experienced builders will recognize as a genuine value-add right out of the box.
• The mil-spec machining means this lower is compatible with the full range of standard AR-15 lower parts kits, triggers, stocks, and buffer systems available on the market today.
• Whether you are building a dedicated 223 Rem carbine, a 300 Blackout suppressor host, a 22 LR conversion platform, or a pistol configuration, this stripped lower gives you the flexibility to run the caliber and configuration you need.
• The hardcoat anodized finish provides a durable, corrosion-resistant surface that holds up to handling, field use, and regular cleaning without wearing through or chipping over time.
• If you want a Ruger-quality, mil-spec AR-15 build that carries a piece of American history in the rollmarks, the Ruger AR Lower 250th Anniversary (28502) gives your custom build a dependable foundation worth passing down.

The Ruger AR Lower 250th Anniversary (28502) is a dependable option for AR-15 builders and collectors who want a mil-spec forged aluminum receiver with precision machining and a commemorative mark that sets this build apart from standard production components.