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-OR: 10mm Optics Ready Upper Receiver, 16"
k10ur-orK10UR-OR: 10mm Optics Ready Upper Receiver, 16"
K10UR-OR Optics Ready Learn More$767.00 As low as: $747.00 -
K24P-40-UR-OR: 40 S&W caliber 11.5" AR15 Pistol/SBR upper
K24P-40-UR-ORK24P-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 Learn More$767.00 -
K24P-40-UR: 40 S&W caliber 11.5" AR15 Pistol/SBR upper
K24P-40-URK24P-40-UR: 40 S&W caliber 11.5" AR15 Pistol/SBR upper
40 S&W; 11.5" AR15 pistol or SBR upper Learn More$721.50 -
K24POR-UR: 5.56x45 AR15 pistol upper
K24POR-URK24POR-UR: 5.56x45 AR15 pistol upper
5.56x45 caliber 11.5" AR15 pistol or SBR upper, optics ready Learn More$572.00 -
K24P-UR: 11.5" barreled 5.56x45 Pistol/SBR upper
K24P-URK24P-UR: 11.5" barreled 5.56x45 Pistol/SBR upper
5.56x45 11.5" AR15 pistol or SBR upper Learn More$526.50 -
K8-204UR: 204 Ruger Targetmatch Upper Receiver
K8-204URK8-204UR: 204 Ruger Targetmatch Upper Receiver
Top end assembly with a 20" bull Targetmatch barrel. Chambered in .204 Ruger Learn More$598.00 -
K16-300UR: 16in. 300 Blackout K16 Style Upper Receiver
K16-300URK16-300UR: 16in. 300 Blackout K16 Style Upper Receiver
16" Bull barreled match grade 300 Blackout target/hunting upper. Great for an Olympic Arms or any major brand lower. Learn More$591.50 -
K1668UR: 16in. 6.8 Remington K16 Style Upper Receiver
K1668URK1668UR: 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 any major brand lower. Learn More$591.50 -
K30R16UR: 16in. 7.62x39 K16 Style Upper Receiver
K30R16URK30R16UR: 16in. 7.62x39 K16 Style Upper Receiver
16" Bull barreled match grade 7.62x39 target/hunting upper. Great for an Olympic Arms or any major brand lower. Learn More$618.80 -
OA93UR
OA93UROA93UR
The OA93 upper is a 6.5" barreled upper chambered in 5.56x45 only. It utilizes a 416 SS barrel with a 1x7" twist and a black-oxide finish. Learn More$903.50 -
K9UR: 16" 9mm A2 Upper Receiver
K9URK9UR: 16" 9mm A2 Upper Receiver
Complete upper receiver assembly chambered in the wildly popular and affordable 9mm pistol cartridge. Standard forged 7076T6 aluminum A2 upper with one high capacity 30 round polymer magazine. Front sight and handguard options available.
Don't forget extra magazine and spare parts!
Learn More$721.50 As low as: $701.50 -
K24P-45-UR: 45 ACP caliber 11.5" AR15 Pistol/SBR upper
K24P-45-URK24P-45-UR: 45 ACP caliber 11.5" AR15 Pistol/SBR upper
45 ACP 11.5" AR15 pistol or SBR upper Learn More$721.50 -
K24P-45-UR-OR: 45 ACP caliber 11.5" AR15 Pistol/SBR upper
K24P-45-ur-orK24P-45-UR-OR: 45 ACP caliber 11.5" AR15 Pistol/SBR upper
45 ACP 11.5" Optics ready AR15 pistol or SBR upper Learn More$767.00 -
K9UR-OR: 9mm Optics Ready Upper Receiver, 16"
K9ur-orK9UR-OR: 9mm Optics Ready Upper Receiver, 16"
K9UR-OR Optics Ready Learn More$767.00 As low as: $747.00 -
K40UR-OR: 40 S&W Optics Ready Upper Receiver, 16"
K40UR-ORK40UR-OR: 40 S&W Optics Ready Upper Receiver, 16"
K40UR-OR Optics Ready Learn More$767.00 As low as: $747.00 -
K45UR-OR: 45 ACP Optics Ready Upper Receiver, 16"
K45UR-ORK45UR-OR: 45 ACP Optics Ready Upper Receiver, 16"
K45UR-OR Optics Ready Learn More$767.00 As low as: $747.00 -
K16-204UR: 16in. .204 Ruger® K16 Style Upper Receiver
K16-204URK16-204UR: 16in. .204 Ruger® K16 Style Upper Receiver
16" Bull barreled match grade .204 Ruger® target/hunting upper. Great for an Olympic Arms or any major brand lower. Learn More$591.50 -
LTFP-6.8UR; 6.8 Remington Upper
LTFP-6.8UR -
K40UR-FT: 16" 40 S&W Flat-top Upper Receiver
K40UR-FTK40UR-FT: 16" 40 S&W Flat-top Upper Receiver
Complete upper receiver assembly chambered in the wildly popular and affordable 40 S&W; cartridge. Standard forged 7076T6 aluminum Picatinny flat-top upper with one high capacity 30 round polymer magazine. Front sight and handguard options available. Learn More$721.50 -
K24P-10-UR-OR: 10mm 11.5" AR15 Pistol/SBR upper
K24P-10-ur-orK24P-10-UR-OR: 10mm 11.5" AR15 Pistol/SBR upper
10mm 11.5" Optics ready AR15 pistol or SBR upper Learn More$767.00