Finish out a custom AR-15 build, or customize an existing AR-15 with these parts used on an upper receiver. Improve a rifle’s accuracy with a free float handguard or improved barrel, or improve an AR-15’s handling with an adjustable gas block, ambidextrous charging handle, or improved muzzle device. Or even swap out to a different caliber with a complete upper receiver! The customizations are endless with the AR-15, the most popular rifle in America.
Showing 1–16 of 301 results
BCGs & Parts (17)
Charging Handles (9)
Complete Upper Receivers (53)
Gas Blocks & Gas Tubes (30)
Muzzle Devices (32)
Replacement Upper Parts (10)
Upper Receivers (5)
Odin Works 6.5mm Grendel Barrel 20″ & Tunable Gas Block/BCG with DMR Rifle Length Gas
Match grade 1MOA guarantee 6.5 Grendel barrel, with gas block, and BCG.
Odin Works Billet Upper Receiver, no Forward Assist
A lightweight AR-15 stripped upper receiver without a forward assist.
Odin Works Low Profile Adjustable Gas Block, Clamp On
Tune your AR-15 for optimal performance suppressed or unsuppressed with this adjustable gas block.
Odin Works .223 Wylde Barrel 18″, DMR Rifle Gas with Adjustable Gas Block
A 1 MOA guarantee AR-15 barrel with adjustable gas block.
CMMG, Inc Rifle Length Gas Tube With Roll Pin
This high quality stainless steel AR-15 gas tube kit from CMMG includes a rifle length gas tube and a gas tube roll pin. Don’t skimp on quality when it comes to such a vital part of your rifle’s operating system, CMMG is known throughout the firearms industry as a premier manufacturer of AR-15 rifles and…
CMMG, Inc ARC-22 AR Conversion Kit, with 3 25 Round Magazines
A drop in conversion kit to fire .22lr from a .223/5.56 AR-15, nothing else needed! Great for training!
Odin Works AR-15 Intermediate Gas Tube, Black Finish
An AR-15 intermediate gas tube with a black coating.
Odin Works Complete AR-15 Upper, 6.5mm Grendel, 15.50″ K-Mod, 18″ Barrel
A 1MOA guarantee complete 6.5mm Grendel AR-15 Upper Receiver.
Odin Works Complete Upper, .223 Caliber, 12.50″ M-Lok, 16″ Barrel, Adjustable Gas Block
A 1MOA guarantee complete .223 AR-15 Upper Receiver.
Troy Industries AR-15 Tomahawk Ultracompact Stock with BCG
An ultracompact AR-15 collapsable stock, including the BCG.
UTG AR-15 Extended Charging Handle Latch by Leapers
Speed up AR-15 reloads with an extended charing handle latch.