AR-308 A3 Stripped Upper Receiver
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Luth-AR
Overview
The Luth-AR AR-308 A3 Stripped Upper Receiver is designed for builders looking to create a custom .308 Win upper assembly on an AR-15 platform. Made from 7075-T6 aluminum, this A3 receiver provides a solid foundation for mounting your chosen components, offering compatibility with a wide range of handguards and accessories. This upper receiver is commonly utilized in precision builds where accuracy and performance are key focuses.
Specifications
Available Merchants(6)
Prices checked
Stock Alert
September 2026 on GunPartPicker
Luth-AR AR-308 A3 Stripped Upper Receiver ranked #66 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 #61 of the 1,706 upper receivers builders have added. Builds with this upper receiver are nearly all chambered in .308 Win, mostly on rifle-length gas (70%, then mid-length 20%), and nearly all AR-10.
It was hard to find in September 2026, in stock on only 3 of the 26 days we checked, and today none of the 6 retailers we track has it in stock right now. Prices barely moved in September 2026, holding around $150.39, so there haven't been real sales lately. Listed prices start at $150.39 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
FAXON Firearms Match Barrel .308 Win 18", Black - Superior Precision and Reliability - 10B810R18FHQ-5R-NP3
PSA GEN3 PA-10 AR-10 Complete Lower .308 Classic EPT
CMMG .308 Win/7.62 Bolt Carrier Group, Black - 38BA423
Aim Sports M-LOK 15" .308 AR-10 Low Profile Free Float Handguard, Black - MTM15L308
Breek Arms AR-15 Warhammer MOD2 Ambidextrous Charging Handle Black
LANTAC Rifle Length Gas Tube - Nitride
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
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