Upper Receivers

TacFire BU-308-20 Rifle Upper Assembly 308 Win Caliber with 20" Black Nitride Barrel, Black Anodized 7075-T6 Aluminum Receiver & M-LOK Handguard for AR-Platform Includes Bolt Carrier Group

Chambered in 308 Win, this rifle upper is completely built and ready to be put on a lower. Includes a Bolt Carrier Group.

TacFire BU30818 Rifle Upper Assembly 308 Win 18" Black Nitride Barrel 7075-T6 Aluminum Black Anodized Receiver M-LOK Handguard for AR-Platform

Chambered in 308 Win, this rifle upper is completely built and ready to be put on a lower. Includes a Bolt Carrier Group.

QRB 1 PIN UPPER RECEIVER TAKEDOWN KIT PISTOL GAS TUBE

AR-15 QRB 1 PIN UPPER RECEIVER TAKEDOWN KIT

Rock River Arms BB0470 LAR-15M RRAGE 3G Complete Upper, 5.56x45mm NATO 16", Black, Aluminum Rec, 15" M-LOK Handguard, A2 Flash Hider, No Forward Assist

CALIBER:5.56MM NATO CHAMBER FOR 5.56MM AND .223 CALIBERUPPER RECEIVER:EXTRUDED ALUMINUM A4 WITH PORT DOOR/NO FORWARD ASSISTBARREL:16-INCH CHROME MOLYMUZZLE DEVICE:A2 FLASH HIDER / 1/2-28 THREADGAS...

300AAC 14.5" P&W NO BCG OR CHCMMG UPPER GROUP RESOLUTE MK4

CMMG UPPER GROUP RESOLUTE MK4300AAC 14.5" P&W NO BCG OR CH

300AAC 16.1" NO BCG/C HANDLECMMG UPPER GROUP RESOLUTE MK4

CMMG UPPER GROUP RESOLUTE MK4300AAC 16.1" NO BCG/C HANDLE

CMMG 55BB40BAB Resolute MK4 5.56x45mm NATO 16.10", Armor Black, M-LOK Free-Float Handguard for AR-Platform (No BCG or Charging Handle)

Top off your next build with this RESOLUTE Mk4 Upper Group. Chambered, this upper group is a staple for any collection and comes ready to pair with the AR15 lower group of your choice.

6" BBL. 8" M-LOK RAILSTERN DEF. PISTOL UPPER 9MM

STERN DEF. PISTOL UPPER 9MM6" BBL. 8" M-LOK RAILFEATURES:Caliber: 9mmTwist: 1:10"Barrel Length: 6"Threaded: .5-36Charging handle Laser engravedMade in U.S.A.

LBE Unlimited AR125RBK Ready Build Kit 12.5"

The LBE Ready Build Kit is a compact AR-15 upper build kit featuring a premium 12.5-inch Cold Hammer Forged (CHF) barrel, engineered for durability and high performance in a pistol-length gas system...

LUTH AR 24" BULL BBL COMP UPPER 223

The Luth-AR 24" Fluted Bull Barrel Complete Upper Barrel Assembly Starts with a 24", .223 caliber fluted bull barrel made from 416 SST with a 1-9" twist mated to a A3 Flattop receiver which includes...

Wilson Combat -TRLOWUPPBIL10ANO WC-10 Matched Set AR-10 Rifle Black Hardcoat Anodized

The BILLet-AR10 upper receiver has a precise bolt raceway for smoother chambering and more rigid receiver walls to reduce firing flex. The BILLet-AR lower receiver has been enhanced with an oversize...

8.5" BBL. 10" M-LOK RAILSTERN DEF. PISTOL UPPER 9MM

STERN DEF. PISTOL UPPER 9MM8.5" BBL. 10" M-LOK RAILFEATURES:Caliber: 9mmTwist: 1:10"Barrel Length: 8.5"Threaded: .5-36Charging handle Laser engravedMade in U.S.A.

AR-15 WORKHORSE 10.5 UPPER M-LOK 1-7 TWIST 5.56 NATO

AR-15 WORKHORSE UPPER RECEIVERS- NO BCG OR CHARGING HANDLE

15" M-LOK HANDGUARD BLACKSTERN DEF. UPPER 9MM 16.1"

STERN DEF. UPPER 9MM 16.1"15" M-LOK HANDGUARD BLACKFEATURES:Caliber: 9mmTwist: 1:10"Barrel Length: 16.1"Threaded: .5-36Charging Handle Laser engravedMade in U.S.A.

Angstadt Arms AAUT009006 UDP-9 Complete Upper 9mm 6"

Angstadt Arms complete upper receiver pistol assembly is ready with any 9mm AR-15 lower receiver. Featuring the same high quality parts that go into the UDP-9 pistol, this completed upper receiver is...

DPMS DP51655115745 18"308 SS UPPER BCG&CH

NORDIC 16" .22LR COMPLETE UPPER 10RD

Nordic Components' 22RB dedicated 22 upper receiver converts your standard AR-pattern lower to a dedicated .22LR for recreational shooting, training, and hunting. The 22RB is manufactured using the...

WMD UPPER ASSY 300BLK 16" BARREL

WMD Guns is what happens when you bring together a diverse team of experts at the top of their fields. They have united metallurgists, chemists, gunsmiths and plating engineers to establish one of...

KIT 6.5 GRENDELALEXANDER AR15 DIY 16" UPPER

ALEXANDER AR15 DIY 16" UPPERKIT 6.5 GRENDEL

CMMG Upper Group Banshee MK4 .22LR 4.5" Barrel Black

Don’t build a .22 LR that looks like an AR build an AR that happens to be chambered in .22 LR. Equipped with a 4.5” barrel the shortest CMMG® offers in any caliber this BANSHEE™ upper group is built...

10.5" 1:7 CARBINE M-LOK NO BCGMI UPPER RECEIVER AR15 5.56MM

MI UPPER RECEIVER AR15 5.56MM10.5" 1:7 CARBINE M-LOK NO BCG

22RB 22LR 16'' UPPER W/HANDGUARD, BOLT SAVER & 10RD MAG

22RB DEDICATED 22 LONG RIFLE UPPER RECEIVER

Nitride Lightweight 16'' Upper Receiver Group, M-LOK, .223 Wylde 1/8, CRM

.625 Gas Block Diameter. M4 feedramps. Mid-Length Direct Impingement Gas System. Combat Series M-LOK Handguard. MI A2 Flash Hider.

Wilson Combat AR-10 Receiver Set Lower/Upper Matched Set Billet with Lightweight Upper Black

Designed by Bill Wilson and the Wilson Combat design team to be the base for the ultimate precision tactical AR-10 rifle the BILLet-AR matched upper and lower receiver set is 100% machined in our...

ASCENT 22 ARC COMPLETE UPPER RECEIVER 16'' GUNNER BBL BLACK

ASCENT 22 ARC COMPLETE UPPER RECEIVER

LUTH AR RIFLE KIT LW 16 W/ FIXED STOCK

Build a Complete 16 Lightweight Barrel AR Kit. This kit contains everything you need to build your own AR except the stripped lower receiver. - The Kit Contains: - Fully assembled 16 Lightweight...

Spikes STU5435MLS Complete Upper 5.56x45mm NATO 16" Black Phosphate/Midlength Barrel, 7075-T6 Aluminum Black Receiver, 12" SAR3 Free-Floating Handguard for AR-15

The Spike's Tactical ST-15 Enhanced upper line-up is designed as a fully Mil-spec compliant upper series for law enforcement. This same level of quality and performance is now available to everyone,...

LUTH AR RIFLE KIT LW 16 W/ ADJ STOCK

Build a Complete 16 Lightweight Barrel AR Kit. This kit contains everything you need to build your own AR except the stripped lower receiver. - The Kit Contains: - Fully assembled 16 Lightweight...

WMD UPPER ASSY 350 LEGEND 16" BARREL

WMD Guns is what happens when you bring together a diverse team of experts at the top of their fields. They have united metallurgists, chemists, gunsmiths and plating engineers to establish one of...

RRA CMPLT CAR A4 UPR 350LGD 16" 10RD

Rock River Arms A4 Carbine upper comes chambered in .350 Legend with a 16" chrome moly 1/16 twist barrel. Additionally this upper includes a RRA 13" M-Lok compatible lightweight free float rail and a...

HM Defense 16MBUP556 MonoBloc Upper 223 Rem, 5.56x45mm NATO 16" Black Cerakote Barrel, 7075-T6 Aluminum Black Anodized Receiver, 15" M-LOK Free-Float Handguard for AR-15

The MonoBloc Upper features a HM barrel with an integral machined patented gas block, and a carbine gas system. It is also 4150 Chromoly, match grade, tripled honed, and button rifled. Its handguard...

LUTH AR RIFLE KIT BULL 16 W/ FIXED STOCK

Build a Complete 16 Fluted Bull Barrel AR Kit. This kit contains everything you need to build your own AR except the stripped lower receiver. - The Kit Contains: - Fully assembled 16 Fluted Bull...

Alexander Arms KIT50 Upper Parts Kits 50 Beowulf 16" Black Barrel, Aluminum Black Receiver for AR-15

The 50 Beowulf DIY Upper Kit includes: 16" barrel with 1:20 twist, 49x64-20 tpi thread and thread protector; complete upper receiver; charging handle; gas block; dowel pins; gas tube; complete BCG...

RRA CMPLT MID A4 UPR 450BM 16" 5RD

Rock River Arms A4 mid-length upper comes chambered in .450 Bushmaster with a 16" chrome moly 1/24 twist barrel. Additionally this upper includes a RRA 13" M-Lok compatible lightweight free float...

LUTH AR RIFLE KIT BULL 16 W/ ADJ STOCK

Build a Complete 16 Fluted Bull Barrel AR Kit. This kit contains everything you need to build your own AR except the stripped lower receiver. - The Kit Contains: - Fully assembled 16 Fluted Bull...

CLT UPPER 223REM 16.1 NO HANDGUARD OR SIGHT

LE6920CK-NHG AR6920 223 Remington/5.56 NATO 16.1 inch barrel. Includes charging handle and bolt.