Knights Armament

Sr-25 Combat Carbine Complete Upper Receivers 308 Win M-LOK - Upper Receiver Combat Carbine KIT 308 Win 14.5 Barrel

Knights Armament Sr-25 Combat Carbine Complete Upper Receivers 308 Win M-Lok - Upper Receiver Combat Carbine Kit 308 Win 14.5 Barrel - Upper Receiver for AR-15 - view 1
Knights Armament Sr-25 Combat Carbine Complete Upper Receivers 308 Win M-Lok - Upper Receiver Combat Carbine Kit 308 Win 14.5 Barrel - Upper Receiver for AR-15 - view 2
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Knights Armament

Overview

The Knights Armament Sr-25 Combat Carbine Complete Upper Receiver is a fully assembled upper designed for the AR-10 platform, featuring a 14.5-inch barrel chambered in .308 Win. This complete assembly allows builders to easily integrate it with a compatible lower receiver, ensuring reliable performance in various shooting applications. This upper is particularly suited for builds utilizing a pistol gas system, making it a solid choice for those looking to create a compact and maneuverable .308 Win AR-10 configuration.

Specifications

MPN111468
AssemblyComplete
PlatformAR-10
Caliber.308 Win
Barrel Length14.5
Receiver TypeAR-10/M5

Available Merchants(2)

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BattleHawk Armory
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$3,500
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Brownells
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$4,000
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Build history on GunPartPicker

Builders have been adding the Knights Armament Sr-25 Combat Carbine Complete Upper Receivers 308 Win M-LOK - Upper Receiver Combat Carbine KIT 308 Win 14.5 Barrel to their builds on GunPartPicker since February 2026. All time, it ranks #457 of the 1,634 upper receivers builders have added.

It was out of stock everywhere we track for all of August 2026, and 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 6 builds that include this one

Knights Armament Sr-25 Lower Receiver 7.62mm

Knights Armament Sr-25 Lower Receiver 7.62mm

Lower Receiver$1,528 · out of stockin 2 builds
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Radian Raptor Charging Handle & Talon Safety Selector Combo - OD Green

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Troy Industries Modular Combat Vertical Foregrip - FDE

Troy Industries Modular Combat Vertical Foregrip - FDE

Foregrip$70in 1 build
Cryptic Coatings 5.56 NATO AR-15 Bolt Carrier Group - Mystic Bronze

Cryptic Coatings 5.56 NATO AR-15 Bolt Carrier Group - Mystic Bronze

Bolt Carrier Group$218in 1 build
TriggerTech AR-10 Diamond 2-Stage Flat Trigger 1.5-4 lbs.

TriggerTech AR-10 Diamond 2-Stage Flat Trigger 1.5-4 lbs.

Trigger$250in 1 build
Sprinco USA Reduced Power KIT Buffer 4-Coil Bolt Extractor Spring

Sprinco USA Reduced Power KIT Buffer 4-Coil Bolt Extractor Spring

Buffer Springin 2 builds

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Gas System

50.3%
Mid-Length50.3%
Carbine26%
Rifle11.2%
Pistol11%
Blowback1.2%
Other0.3%

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