Upper — Best Prices Today
4,387 listings tracked · 1,680 in stock
4,387 upper listings are tracked, 1,680 of them in stock across 20 retailers. In-stock listings appear first. Each upper product page shows its current offers and recorded price history.

Brownells
Geissele Automatics Ar-15 Super Duty Nano Complete Upper Receivers 5.56mm - Ar-15 10.3 Super Duty Nano Complete Upper Receiver Ddc$1,274.99
Out of stock
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Brownells
Stag 15 5.56 7.5in Tactical Nitride Upper Receivers - Stag 15 Tactical 7.5'''' Nitride Upper$499.99
Out of stock
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Brownells
Zro Delta Ar-15 Forged M4 Upper Receiver 5.56mm - Ar-15 Forged M4 Stripped Upper Receiver$69.99
Out of stock
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Brownells
Brownells Bundles Dd 14.5'''' M4a1 Riii Upper Receiver W/ Eotech Optics - Dd 14.5'''' M4a1 Riii Upper W/ Exps3-0 Holographic Red Dot$1,263.99
Out of stock
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Brownells
Brownells Ar-15 Colt 16 Upper Build Kit 5.56mm - Brn Ar-15 Colt Upper Build Kit, 5.56mm, 16'''' Bbl$910.99
Out of stock
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Brownells
Foxtrot Mike Products Ar-15 9mm Upper Receivers M-Lok Assembled - Ar-15 Mike-9 5'''' 9mm Upper Receiver M-Lok Assembled Black$281.99
Out of stock
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Brownells · 5 offers
Faxon Firearms Arak-21 5.56x45 Nato Complete Upper Receiver - Arak-21 5.56 Nato Complete Upper Rcvr 12.5'''' Medium Bbl Blk$919.08
Out of stock
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Brownells
Brownells Ar-15 M4 Upper Receivers M-Lok 5.56mm - Ar-15 16'''' M4 Complete Upper Assembly$529.99
Out of stock
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Brownells
Sons Of Liberty Gun Works Broadsword-89 6mm Max Assembled Upper Receiver - Broadsword-89 6mm Max 14.5'''' Bbl 13'''' M89 Rail W/Nox$1,282.50
Out of stock
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Brownells
Foxtrot Mike Products Ar-15 Mike-15 Gen 2 Upper Receiver Assembly 223 Wylde - Ar-15 16'''' Upper Receiver Mid-Length M-Lok 223 Wylde Black$599.99
Out of stock
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Brownells
Geissele Automatics Ar-15 Super Duty Stripped Upper Receivers 5.56mm - Ar-15 16'''' Top Tier Stripped Super Duty Upper Od Green$1,070.00
Out of stock
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Brownells
Brownells Ar-15 Stag 15 16'''' Upper Build Kit 5.56mm - Ar-15 Stag 15 16 Upper Build Kit 5.56mm$924.99
Out of stock
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Brownells
Knights Armament Sr-15 Ks-1 5.56 Nato Assembled Upper Receiver - Sr-15 Ks-1 5.56 Nato 13.7'''' Bbl Assembled Upper Rcvr Black$1,983.60
Out of stock
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Brownells
Primary Weapons Mk116 Mod 1-M 7.62x39mm Complete Upper Receiver - Mk116 Mod 1-M 7.62x39mm 16.1'''' Bbl Complete Upper Receiver$1,029.49
Out of stock
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Brownells
Stag 15 5.56 M4 Upper Receivers - Stag 15 M4 Phosphate Upper$483.99
Out of stock
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Brownells
Geissele Automatics Mk16 Super Duty Complete Upper Receivers 5.56mm - Mk16 14.5'''' Super Duty Upper Chf Bbl, Ach, Nano Fh/Bcg Odg$1,350.00
Out of stock
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Brownells
Brownells Brn-4(R) Complete Upper Receivers - Brn-4 5.56mm 14.5'''' Med Bbl Complete Upper W/13.5'''' Handguard$1,361.99
Out of stock
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Brownells
Colt M4 5.56 Complete Monolithic Upper Receiver Groups - M4 Le6940 Upper Group 16in Stripped$1,070.99
Out of stock
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Brownells
Matador Arms Montgo-9 9mm Upper Receiver - Montgo-9 9mm Luger Upper Receiver Black$550.00
Out of stock
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Brownells
Cross Machine Tool Co. Ar-15/M16 458 Socom Billet Upper Receiver - Ar-15/M16 Billet Upper Receiver, .458 Socom$115.99
Out of stock
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Brownells · 3 offers
Aero Precision M4e1 Threaded 350 Legend Assembled Upper Receiver - M4e1 350 Legend Assembled Upper Dmr 20'''' Carbine Threaded Blk$619.99
Out of stock
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Brownells
Brownells Brn-9 Upper Receiver 9mm - Brn-9 Upper Receiver 9mm$669.99
Out of stock
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Brownells · 2 offers
Colt Enhanced Patrol Rifle Epr 5.56 M4 Upper Receiver Groups - M4 Le6933 Epr Upper Group 11.5in Stripped$729.99
Out of stock
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