Knights Armament 7.62MM SR-25K5 14.5" Upper Receiver KIT

Knights Armament 7.62MM SR-25K5 14.5" Upper Receiver KIT
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Overview

The Knights Armament 7.62MM SR-25K5 14.5" Upper Receiver KIT is a upper receiver. Compare prices from multiple merchants and find the best deal.

Specifications

MPN31510
Caliber7.62x51 NATO
AssemblyComplete
Barrel Length14.5
PlatformAR-10
Receiver TypeAR-10/M5
Receiver PatternSR-25

Available Merchants(4)

Prices checked

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Palmetto State Armory logo
Palmetto State Armory
Free shipping
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In Stock
$185
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Brownells logo
Brownells
Free shipping
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Out of Stock
$156
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Ammunition Depot logo
Ammunition Depot
~$28.90 est. shipping
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Out of Stock
$159
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AR15 Discounts logo
AR15 Discounts
~$9.99 est. shipping
Shipping Speed
Out of Stock
$3,146
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Build history on GunPartPicker

Builders have been adding the Knights Armament 7.62MM SR-25K5 14.5" Upper Receiver KIT to their builds on GunPartPicker since March 2026. All time, it ranks #193 of the 1,654 upper receivers builders have added.

It was hard to find in September 2026, in stock on only 3 of the 8 days we checked, and today only Palmetto State Armory has it in stock. The best price crept up from $155.99 to $3,146.40 over September 2026. Buying today, the lowest price is $184.99 at Palmetto State Armory, above September's low of $155.99, so a better deal may come back.

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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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