Knights Armament

Knights Armament SR-15 MOD2 5.56 NATO AR-15 Complete Upper Receiver - 14.5”

Knights Armament SR-15 MOD2 5.56 NATO AR-15 Complete Upper Receiver - 14.5” - Upper Receiver for AR-15 - view 1

Knights Armament

Overview

The Knights Armament SR-15 MOD2 5.56 NATO AR-15 Complete Upper Receiver features a 14.5-inch barrel, optimized with a 1:7 twist rate, which ensures stable bullet performance across a range of weights. This complete upper is equipped with an M-LOK handguard, allowing for versatile attachment of accessories while maintaining a lightweight profile. Commonly found in builds chambered for 5.56 NATO, this upper is an excellent choice for those looking to enhance their AR-15 platform with reliable performance and flexibility.

Specifications

MPNKNAC31949
Twist Rate1:7
PlatformAR-15
AssemblyComplete
Barrel Length14.5
HandguardM-LOK
Caliber5.56 NATO

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Build history on GunPartPicker

Builders have been adding the Knights Armament SR-15 MOD2 5.56 NATO AR-15 Complete Upper Receiver - 14.5” to their builds on GunPartPicker since February 2026. All time, it ranks #917 of the 1,654 upper receivers builders have added.

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Frequently Built With

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

Knights Armament Sr-15 Iws Lower Receiver Complete

Knights Armament Sr-15 Iws Lower Receiver Complete

Lower Receiver$959 · out of stockin 40% of them
BCM Gunfighter AR-15 Short Vertical Foregrip, FDE - VGSFDE

BCM Gunfighter AR-15 Short Vertical Foregrip, FDE - VGSFDE

Foregrip$36in 20% of them
Geissele Automatics AR-15 SSA X Lightning Bow Trigger

Geissele Automatics AR-15 SSA X Lightning Bow Trigger

Trigger$335in 40% of them
Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers

Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers

Charging Handle$69 · out of stockin 20% of them
LMT Piston Full Auto 5.56 AR-15 Bolt Carrier Group

LMT Piston Full Auto 5.56 AR-15 Bolt Carrier Group

Bolt Carrier Groupin 20% of them
Magpul MOE-SL Grip Polymer Dark Earth

Magpul MOE-SL Grip Polymer Dark Earth

Pistol Grip$16in 20% of them

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Gas System

50.4%
Mid-Length50.4%
Carbine25.9%
Pistol11.2%
Rifle11%
Blowback1.3%
Other0.3%

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