Home / Receiver Parts / 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
M4-89 300 Aac Blackout Assembled Upper Receiver - M4-89 300 Aac Blackout 13.9'''' Bbl 13'''' M89 Rail & Flash Hider
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$712.5
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Updated
Aug 26, 2026
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Description
The SOLGW M4-89 Upper Half comes with SOLGW's Combat Barrel and M89 Rail, and is available in 13.9" 300blk with NOX muzzle device. No BCG or C/H *13.9" barrels come pinned and welded flash hiders for OAL of 16"* Mfg: Sons Of Liberty Gun Works
