Sons Of Liberty Gun Works

M4-89 300 Aac Blackout Assembled Upper Receiver - M4-89 300 Aac Blackout 13.9'''' Bbl 13'''' M89 Rail & Flash Hider

Best price $712.50 at Brownells

Category: Firearm
MPN: M489UPPER139300
UPC: 00669185245905

Price comparison

RetailerPriceStock
Brownells $712.50 ~~$950.00~~ Out of stock Updated 2 days ago

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Price history

Current best $712.50All-time low $712.50 (Jul 17, 2026)Highest $712.50