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.
-
16" K3B Upper Receiver
K3BUR -
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 -
K16UR: 16in. K16 Upper Receiver
K16URK16UR: 16in. K16 Upper Receiver
16" Bull barreled match grade 5.56x45 target/hunting upper. Great for an Olympic Arms or any major brand lower. Learn More$533.00 -
K8UR Targetmatch Upper Receiver
K8URK8UR Targetmatch Upper Receiver
Top end assembly with a 20" bull Targetmatch barrel. Available in 5.56 NATO and 6.8 SPC Learn More$560.30 -
K2CA: 20" Heavy Barrel Upper Receiver Unit
K4BURK2CA: 20" Heavy Barrel Upper Receiver Unit
K2CA: Heavy Barrel 5.56x45 Complete Upper Learn More$572.00 -
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 -
16" 7.62 x 39mm Upper Receiver
K30R-UR16" 7.62 x 39mm Upper Receiver
Complete upper receiver assembly manufactured for 7.62 x 39mm and includes one magazine. Learn More$588.90 -
16" K3B-M4 Upper Receiver
K3B-M4UR16" K3B-M4 Upper Receiver
Features an M4 contoured barrel and M4 handguards. Available in 5.56 NATO Learn More$588.90 -
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 -
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 -
K868UR: 20" Targetmatch Upper Receiver 6.8 Remington
K868URK868UR: 20" Targetmatch Upper Receiver 6.8 Remington
Top end assembly with a 20" bull Targetmatch barrel. Available in 5.56 NATO and 6.8 SPC Learn More$598.00 -
11.5" K3B-CAR Upper Receiver
K3B-CARUR11.5" K3B-CAR Upper Receiver
This K3B variant has an 11.5" barrel with a permanently attached 5.5" flash suppressor. Available in 5.56 NATO Learn More$598.00 -
16" K3B-FAR Upper Receiver
K3B-FAR-UR16" K3B-FAR Upper Receiver
This model features a Featherweight (FAR) barrel which lightens the weight significantly without compromising accuracy or quality. Available in 5.56 NATO Learn More$599.00 -
16in. K74 Upper Receiver
K74UR -
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 -
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 -
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 -
16" 6.8 SPC Upper Receiver
K68UR16" 6.8 SPC Upper Receiver
Complete upper receiver assembly manufactured for 6.8 Remington/SPC and includes one magazine. Learn More$637.00 -
16in. LT M4 Upper Receiver
LTM4UR16in. LT M4 Upper Receiver
The LT model has a M4 style barrel. Other options are also included standard. Available in 5.56 NATO Learn More$696.80 -
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