Uppers
All upper receivers not chambered in 5.56x45 or .223 Remington come with one (1) caliber specific magazine. Capacity may vary depending on your State's laws.
When ordering an upper reciever unit please keep the following in mind: All complete uppers sold on-line come fully assembled, headspaced and test-fired. While each upper is made to mil-spec standards for dimensions and tolerances, uppers may fit differently on various lowers. Some may fit tighter than other, some may fit looser. Some may require minor fitting based on tolerance stacking. Each upper comes with a lifetime warranty and a 60 Day Satisfaction Guaranty. Please see our Warranty page for details.
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K10UR-FT: 16" 10mm Flat-top Upper
Complete upper receiver assembly chambered in the wildly popular and affordable 10mm pistol car...
K10ur-FT$721.50 -
K40UR-FT: 16" 40 S&W Flat-top Upper Receiver
Complete upper receiver assembly chambered in the wildly popular and affordable 40 S&W; cartridg...
K40UR-FT$721.50
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K24P-10-UR-OR: 10mm 11.5" AR15 Pistol/SBR upper
10mm 11.5" Optics ready AR15 pistol or SBR upper
K24P-10-ur-or$767.00 -
K24P-10-UR: 10MM 11.5" AR15 Pistol/SBR upper
10 mm 11.5" AR15 pistol or SBR upper
K24p-10-ur$721.50 -
K24P-9-UR-OR: 9mm 11.5" AR15 Pistol/SBR upper
9mm 11.5" Optics ready AR15 pistol or SBR upper
K24P-9-ur-or$767.00
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K24P-45-UR-OR: 45 ACP caliber 11.5" AR15 Pistol/SBR upper
45 ACP 11.5" Optics ready AR15 pistol or SBR upper
K24P-45-ur-or$767.00 -
K24P-45-UR: 45 ACP caliber 11.5" AR15 Pistol/SBR upper
45 ACP 11.5" AR15 pistol or SBR upper
K24P-45-UR$721.50
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K24P-40-UR-OR: 40 S&W caliber 11.5" AR15 Pistol/SBR upper
40 S&W; 11.5" Optics ready AR15 pistol or SBR upper
K24P-40-UR-OR$767.00 -
K24P-40-UR: 40 S&W caliber 11.5" AR15 Pistol/SBR upper
40 S&W; 11.5" AR15 pistol or SBR upper
K24P-40-UR$721.50 -
K24POR-UR: 5.56x45 AR15 pistol upper
5.56x45 caliber 11.5" AR15 pistol or SBR upper, optics ready
K24POR-UR$572.00
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K16-204UR: 16in. .204 Ruger® K16 Style Upper Receiver
16" Bull barreled match grade .204 Ruger® target/hunting upper. Great for an Olympic Arms or ...
K16-204UR$591.50 -
K6T-Sale: 20" Ultramatch Tactical Upper Assem. .223 Remington
20" Ultramatch Tactical Upper: .223 Remington
K6T-SALE$726.70
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K30R16-SST UR: 16in. 7.62x39 K16 Style Upper Receiver
16" Bull barreled match grade 7.62x39 target/hunting upper. Great for an Olympic Arms or any m...
K30R16-SSTUR$399.00 -
GSG2-556UR-Sale: Gamestalker Upper Receiver
GSG2 5.56 Closeout Gamestalker Upper Receiver, Black/SS
GSG2-556UR$675.00 -
K8T-UR-SALE: Tactical Targetmatch Upper Receiver Closeout
K8: 20" Bull Barrel Tactical Targetmatch Upper. Chambered in 5.56 x 45
K8T-UR-SALE$449.00 As low as: $376.00
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K3B-CAR Upper LIMITED SALE
This K3B variant has an 11.5" barrel with a permanently attached 5.5" flash suppressor. Availab...
K3B-CARUR-SALE$399.00 -
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K24P-300-OR-UR: 300 Blackout Upper
300 Blackout caliber 11.5" AR15 pistol or SBR upper, optics ready upper
K24P-300-or-ur$572.00
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K10UR-OR: 10mm Optics Ready Upper Receiver, 16"
K10UR-OR Optics Ready
k10ur-or$767.00 As low as: $747.00 -
K9UR-OR: 9mm Optics Ready Upper Receiver, 16"
K9UR-OR Optics Ready
K9ur-or$767.00 As low as: $747.00 -
K40UR-OR: 40 S&W Optics Ready Upper Receiver, 16"
K40UR-OR Optics Ready
K40UR-OR$767.00 As low as: $747.00
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K45UR-OR: 45 ACP Optics Ready Upper Receiver, 16"
K45UR-OR Optics Ready
K45UR-OR$767.00 As low as: $747.00 -
K24P-UR: 11.5" barreled 5.56x45 Pistol/SBR upper
5.56x45 11.5" AR15 pistol or SBR upper
K24P-UR$526.50 -
K16-300UR: 16in. 300 Blackout K16 Style Upper Receiver
16" Bull barreled match grade 300 Blackout target/hunting upper. Great for an Olympic Arms or a...
K16-300UR$591.50
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K1668UR: 16in. 6.8 Remington K16 Style Upper Receiver
16" Bull barreled match grade 6.8 Remington target/hunting upper. Great for an Olympic Arms or...
K1668UR$591.50 -
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16" 7.62 x 39mm Upper Receiver
Complete upper receiver assembly manufactured for 7.62 x 39mm and includes one magazine.
K30R-UR$588.90