Knights Armament Company 7.62MM SR-25A2 20" Upper Receiver Kit 121471

The Knights Armament SR-25A2 20" Upper Receiver Kit brings genuine military heritage to the civilian AR-10 platform. As the commercial counterpart to the M110A2 — the U.S. military's semi-automatic sniper system — this upper receiver kit is engineered for shooters who need mid-range precision fire with total reliability, shot after shot.

Key Features

• 20" Chrome-Lined Barrel — 5R cut rifled, 1:10" twist, chambered in 7.62mm NATO/.308 Winchester, built on a dimpled hybrid medium profile for a balance of accuracy and durability across extended strings of fire.
• High-Pressure Dual Ejector Bolt — Improves function and extends service life in both suppressed and unsuppressed setups, even under adverse conditions.
• URX6 Modular Handguard — A self-indexing, impact-resistant handguard with seven sides of M-LOK slots and a continuous top MIL-STD-1913 rail, giving you a clean, low-profile platform for optics, lights, and accessories.
• 7075-T6 Aluminum Upper Receiver — Hard-anodized black finish for corrosion resistance and lightweight strength without sacrificing rigidity.
• KAC Suppressor-Ready Muzzle Device — Compatible with KAC's 7.62 QDC suppressor line for fast, tool-less mounting.
• SR-25 Pattern Compatibility — Drops onto SR-25/AR-10 pattern lowers for a proven, modular build.

Built for the Mission — Whatever Yours Is

Whether you're assembling a precision long-range rifle, a duty-grade 7.62 platform, or a competition build, the SR-25A2 upper delivers the accuracy and reliability that have made Knights Armament a trusted name with military and law enforcement units worldwide.