Whether you're upgrading performance or starting a new build, each part is vetted for reliability and compliance.
Doublestar Corp. Stripped Lower, STAR-15, Semi-automatic, 223 Remington/5.56 NATO, Anodized Finish, Black DSCL101
Doublestar
Stripped Lower
DSCL101
$101.08
Ships from Warehouse
Odin Works OTR-15, Semi-automatic, Lower/Upper Set, 223 Remington/556NATO Matte Finish, Ranger Green OTR-15-RECEIVER-SET-RG
Odin Works
OTR-15
OTR-15-RECEIVER-SET-RG
$473.10
Ships from Warehouse
NcSTAR AR15 Upper Receiver Block, For use with AR-15, Anodized Finish, Blue VTARUVB
Ncstar
AR15 Upper Receiver Block
VTARUVB
$42.99
Ships from Warehouse
NcSTAR AR10 Upper Receiver Block, For use with AR-10, Anodized Finish, Blue VTHAR10UVB
Ncstar
AR10 Upper Receiver Block
VTHAR10UVB
$42.99
Ships from Warehouse
Primary Weapons Systems MK116 MOD 2-M, Upper Receiver, Fits AR-15, 223 Wylde, 16.1 Barrel, 1:8 Twist, FSC 556 Muzzle Device, 15 PWS PicLok MLOK Handguard, Anodized Finish, Black, Includes Radian Raptor Ambidextrous Charging Handle MK1-M2U-223-16
Primary Weapons Systems
MK116
MK1-M2U-223-16
$1409.94
Ships from Warehouse
Nordic Components 22RB Complete Upper, 22LR, 16 Match Grade Barrel, 1:16 Twist, Black Finish, A2 Flash Suppressor, Aluminum Slim Diameter Handguard, Stainless Steel Bolt, 10Rd Black Dog Magazine, Black Dog Machine Bolt Saver (for retaining bolt carri
Nordic Components
22RB
22RB-UPPER-16-KIT
$589.15
Ships from Warehouse
LanTac USA LLC SF AR-15 Forged Builder Set, Anodized Finish, Black, Includes Upper/Lower Receiver and 13.5 Spada M-LOK Rail with Mounting Hardware 01-RV-BSET-13-SF
Lantac Usa
SF Builder Kit
01-RV-BSET-13-SF
$514.49
Ships from Warehouse
LanTac USA LLC SF AR-15 Forged Builder Set, Anodized Finish, Black, Includes Upper/Lower Receiver and 12.5 Spada M-LOK Rail with Mounting Hardware 01-RV-BSET-12-SF
Lantac Usa
SF Builder Kit
01-RV-BSET-12-SF
$510.49
Ships from Warehouse
Daniel Defense DD4 RIIIS, Complete Upper Receiver, 556NATO, 11.5 Barrel, 1:7 Twist, Daniel Defense RIS III 10.5 Handguard, M16 Profile Bolt Carrier Group, Anodized Finish, Black/Flat Dark Earth 23-191-02397-011
Daniel Defense
DD4 RIIIS
23-191-02397-011
$1467.45
Ships from Warehouse
Bravo Company Semi-automatic Complete Lower Receiver, AR, 223 Remington/556NATO, Anodized Finish, Black, BCM Gunfighter Stock, Fire Controls Marked SAFE and SEMI, BCMGUNFIGHTER Enhanced Trigger Guard, BCMGUNFIGHTER QD End Plate, BCMGUNFIGHTER Pistol
Bravo Company
BCM
LRGSTKMOD0BLK
$495.99
In-Store Today
Bravo Company Upper, Mil-Spec, 1913 Rail for Mounting Optics and Accessories, Flat Top, Black BCM4-UR-M4
Bravo Company
Upper
4URM4
$142.35
Ships from Warehouse
Rise Armament Complete Upper, 6MM ARC, 18 Stainless Steel Barrel, 1:7 Twist, 1/2x28 Threaded, Rifle Length Gas System, 15.25 Free Float M-LOK Handguard, Black Nitride Bolt Carrier Group, Ambidextrous Charging Handle, Cerakote Finish, Patriot Brown RA
Rise Armament
RA6ARCCUBRN18
$999.00
Ships from Warehouse
Rise Armament Complete Upper, 6MM ARC, 18 Stainless Steel Barrel, 1:7 Twist, 1/2x28 Threaded, Rifle Length Gas System, 15.25 Free Float M-LOK Handguard, Black Nitride Bolt Carrier Group, Ambidextrous Charging Handle, Anodized Finish, Black RA-6ARC-CU
Rise Armament
RA6ARCCUBLK18
$999.00
Ships from Warehouse
Rise Armament Complete Upper, 22 ARC, 18 Stainless Steel Barrel, 1:7 Twist, 1/2x28 Threaded, Rifle Length Gas System, 15.25 Free Float M-LOK Handguard, Black Nitride Bolt Carrier Group, Ambidextrous Charging Handle, Anodized Finish, Black RA-22ARC-CU
Rise Armament
RA22ARCCUBLK18
$999.00
Ships from Warehouse
Rise Armament Stripped Lower Receiver, Semi-automatic, 223 Remington/556NATO, Ambidextrous, Anodized Finish, Black RA-SL-223
Rise Armament
Stripped Lower Reciever
RASL223
$115.91
Ships from Warehouse
Fightlite Industries MCR556DFRM 5.56x45mm NATO 16.25 7075-T6 Aluminum M-LOK Handguard
Fightlite
MCR556DFRM
$6626.39
Ships from Warehouse
FightLite (MCR) Mission Configurable Rifle, Milspec Complete Upper Receiver, 556NATO, 12.5 Threaded Barrel, Dual Feed, Picatinny Rail, Dry Film Lubrication, Fits AR-15 Lower Receiver, Anodized Finish, Black MCR-556-DFRS
FiteLite
Mission Configurable Rifle
MCR556DFRS
$6626.39
Ships from Warehouse
FightLite (MCR) Mission Configurable Rifle, Milspec Complete Upper Receiver, 556NATO, 16.25 Threaded Barrel, Dual Feed, Picatinny Rail, Dry Film Lubrication, Fits AR-15 Lower Receiver, Anodized Finish, Black MCR-556-DFR
FiteLite
Mission Configurable Rifle
MCR556DFR
$6626.39
Ships from Warehouse
FightLite Mission Configurable Rifle, 556NATO, 16.25, Black MCR-060M
FiteLite
Mission Configurable Rifle
MCR060M
$5903.51
Ships from Warehouse
Primary Weapons Systems MK116 MOD 2-M, Upper Receiver, 762x39, 16.1 Barrel, Triad30 Muzzle Device, Anodized Finish, Black, Radian Raptor Charging Handle, MLOK Handguard, Fits AR-15 MK1-M2U-762X39-16
Primary Weapons Systems
MK116
MK1-M2U-762X39-16
$1409.94
Ships from Warehouse
Primary Weapons Systems MMK116 MOD 1-M, Upper Receiver, 762X39, 16.1 Barrel, Triad30 Muzzle Device, Anodized Finish, Black, Radian Raptor Charging Handle, MLOK Handguard, Fits AR-15 MK1-M1U-762X39-16
Primary Weapons Systems
MK116
MK1-M1U-762X39-16
$1095.13
Ships from Warehouse
CMMG MK4 Stripped Lower Receiver — .223 Rem / 5.56 NATO | AR-15 Lower | 55CA102-AB
Cmmg
Mk4
55CA102AB
$132.00
In-Store Today
CMMG 57BBCF0AB Banshee 5.7x28mm 5, Armor Black, M-Lok Free-Float Handgaurd for AR-Platform
Cmmg
Banshee
57BBCF0AB
$847.25
Ships from Warehouse
M&P Accessories 110116 Complete Upper Parts Kit Upper Parts Kits AR-15
Battenfeld
Complete Upper Parts Kit
110116
$23.20
Ships from Warehouse
Information