Colt AR-15 4X21mm Carry Handle Scope Fine Duplex Reticle Optic - RETRO4X-COLT
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Colt
Overview
The Colt AR-15 4X21mm Carry Handle Scope is a fixed power optic designed specifically for AR-15 platforms, offering a 4X magnification that enhances target acquisition while maintaining a compact profile. The 21mm objective diameter provides a bright and clear sight picture, while the fine Duplex reticle aids in precision aiming without obstructing the view of your target. This scope is commonly found in builds chambered in 5.56 NATO, making it a solid choice for both tactical and range applications.
Specifications
Build history on GunPartPicker
Builders on GunPartPicker first added the Colt AR-15 4X21mm Carry Handle Scope Fine Duplex Reticle Optic - RETRO4X-COLT to a build in February 2026.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today the one retailer we track has it in stock. Prices barely moved in August 2026, holding around $399.99, so there haven't been real sales lately. Buying today, the lowest price is $399.99 at Brownells, which matches the best price we saw in August.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
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