Knights Armament

Knights Armament SR-25 APC Upper Receiver Assembly 308 Winchester 16 Barrel URX 4 M-LOK Handguard

Knights Armament SR-25 APC Upper Receiver Assembly 308 Winchester 16 Barrel URX 4 M-Lok Handguard - Upper Receiver for AR-15 - view 1
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Knights Armament

Overview

The Knights Armament SR-25 APC Upper Receiver Assembly features a complete design optimized for the .308 Winchester caliber, making it a solid choice for those building an AR-10 platform. With a 16-inch barrel, this upper assembly balances maneuverability and performance, allowing for effective use in a variety of shooting scenarios. Builds that utilize this upper receiver commonly focus on .308 Win applications, catering to enthusiasts seeking precision and reliability.

Specifications

MPN111474
AssemblyComplete
Caliber.308 Win
PlatformAR-10
Barrel Length16
Receiver TypeAR-10/M5
Receiver PatternSR-25

Available Merchants(2)

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BattleHawk Armory
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$3,500.00
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Brownells
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$3,918.75
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September 2026 on GunPartPicker

Knights Armament SR-25 APC Upper Receiver Assembly 308 Winchester 16 Barrel URX 4 M-LOK Handguard ranked #168 of the 615 upper receivers builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #380 of the 1,867 upper receivers builders have added.

Today none of the 2 retailers we track has it in stock right now. Listed prices start at $3,500 at BattleHawk Armory for when it comes back.

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Frequently Built With

The part most often added in each category by the builds that include this one

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Knight's Armament Co SR-15, 5.56mm, Stripped Lower Receiver ***BLEMISHED***

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Radian Raptor Ambidextrous Charging Handle - Talon Safety Selector Combo - Radian Grey

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Charging Handle$128in 20% of them
Magpul M-LOK Handstop KIT - Black

Magpul M-LOK Handstop KIT - Black

Foregrip$17in 20% of them
Daniel Defense Collapsible Mil-Spec Buttstock, Brown - 21-091-04179-011

Daniel Defense Collapsible Mil-Spec Buttstock, Brown - 21-091-04179-011

Stock & Brace$82in 40% of them
SOCOM556-RC3 Rifle Suppressor Black

SOCOM556-RC3 Rifle Suppressor Black

Suppressor$1,709in 20% of them

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Gas System

49.9%
Mid-Length49.9%
Carbine26.1%
Pistol11.6%
Rifle10.8%
Blowback1.3%
Other0.3%

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