Knights Armament Sr-25 Lower Receiver 7.62mm
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Knights Armament
Overview
The Knights Armament SR-25 Lower Receiver is a stripped lower designed for the AR-10 platform, specifically accommodating the 7.62x51 NATO caliber. Made from durable 6061-T6 aluminum and finished with a hardcoat anodized black finish, this lower receiver provides a robust foundation for your build, ensuring reliability and performance. You'll commonly find this lower in builds featuring a carbine gas system, making it a solid choice for those looking to create a versatile and powerful rifle.
Specifications
September 2026 on GunPartPicker
Knights Armament Sr-25 Lower Receiver 7.62mm ranked #89 of the 477 lower 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 #56 of the 1,037 lower receivers builders have added. Builds with this lower receiver are split between 5.56 NATO (34%) and 7.62x51 NATO (23%), split between carbine-length (50%) and rifle-length (38%) gas systems, and nearly all AR-10.
It was out of stock everywhere we track for all of September 2026, and today none of the 3 retailers we track has it in stock right now. Listed prices start at $1,528.31 at Brownells for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Frequently Built With
The part most often added in each category by the builds that include this one
Franklin Armory BFSIII HK-C1 Binary Trigger - 05-50000-Black
Knights Armament 7.62MM SR-25A2 20" Upper Receiver KIT
Radian Weapons Talon Ambidextrous Safety Selector KIT - 4 Levers - Radian Grey
Freedom Ordnance FG-15 Trigger Actuating Grip - FG-15
Nemo AR-15 Ambidextrous Magazine Release
LANTAC Ultimate Takedown Pin Set - Titanium
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
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