Home /Categories / Upper Receivers

Shop 4,462 Deals on Upper Receivers

Browse Upper Receivers for sale at the lowest prices online.

Daniel Defense .300 AAC Blackout Upper with 10.3" Barrel, Black - 2308819020047 - Daniel Defense

Daniel Defense .300 AAC Blackout Upper with 10.3" Barrel, Black - 2308819020047

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Daniel Defense M4A1 FSP 14.50" Carbine-Length Upper 5.56x45mm 1:7 Quad Rail with BCG and CH, Flat Dark Earth - Tactical Precision - 2300409376 - Daniel Defense

Daniel Defense M4A1 FSP 14.50" Carbine-Length Upper 5.56x45mm 1:7 Quad Rail with BCG and CH, Flat Dark Earth - Tactical Precision - 2300409376

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

FightLite MCR Dual-Feed 16.25" Upper 5.56x45mm 1:7 Mil-Std 1913 Picatinny Rail, Black - Fightlite

FightLite MCR Dual-Feed 16.25" Upper 5.56x45mm 1:7 Mil-Std 1913 Picatinny Rail, Black

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Bootleg Billet Upper, Upper, Black, AR15 - BPUR1A - Bootleg

Bootleg Billet Upper, Upper, Black, AR15 - BPUR1A

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Sons of Liberty Gun Works .223 Remington Upper with 13.7" Barrel, Black - EXO3UPPER13.7556 - Sons Of Liberty Gun Works

Sons of Liberty Gun Works .223 Remington Upper with 13.7" Barrel, Black - EXO3UPPER13.7556

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Sons Of Liberty Gun Works

Spike's Tactical Generation 2, Billet, Upper, 223 Remington, 556NATO, Black, Mil-Spec Barrel Nut - Spikes Tactical

Spike's Tactical Generation 2, Billet, Upper, 223 Remington, 556NATO, Black, Mil-Spec Barrel Nut

$270.00 $208.99

Spikes Tactical

Sons of Liberty Gun Works L89 V2 5.56 11.50" Upper 5.56x45mm M-LOK Rail, Black - Sons Of Liberty Gun Works

Sons of Liberty Gun Works L89 V2 5.56 11.50" Upper 5.56x45mm M-LOK Rail, Black

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Sons Of Liberty Gun Works

Heckler and Koch MR556 A4 Upper Receiver/Barrel Assembly 5.56 11 Barrel - Heckler And Koch

Heckler and Koch MR556 A4 Upper Receiver/Barrel Assembly 5.56 11 Barrel

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Heckler And Koch

Sons of Liberty Gun Works East India Starter Kit Combat Grade 11.5in 5.56mm Black - Sons Of Liberty Gun Works

Sons of Liberty Gun Works East India Starter Kit Combat Grade 11.5in 5.56mm Black

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Sons Of Liberty Gun Works

Daniel Defense M4A1 14.5" Pinned 5.56x45mm Upper Receiver, FDE - 23-004-13150 - Daniel Defense

Daniel Defense M4A1 14.5" Pinned 5.56x45mm Upper Receiver, FDE - 23-004-13150

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Aero Precision EPC-9 Threaded 16" Upper 9mm 1:7 M-LOK Rail, Black - Aero Precision

Aero Precision EPC-9 Threaded 16" Upper 9mm 1:7 M-LOK Rail, Black

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Aero Precision AR15 Complete Upper 5.56 / .223 Rem 10.5 Barrel - Aero Precision

Aero Precision AR15 Complete Upper 5.56 / .223 Rem 10.5 Barrel

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

LBE Unlimited AR-15 Upper Receiver Assembly, Black - ARUPPER - Lbe

LBE Unlimited AR-15 Upper Receiver Assembly, Black - ARUPPER

Geissele Automatics Geissele URG-I Near Clone 5.56 NATO 10.3" 1:7" Gov Bbl DDC Complete Upper Receiver Group w/9.3" M-LOK MK16 SMR 08-176 - Geissele Automatics

Geissele Automatics Geissele URG-I Near Clone 5.56 NATO 10.3" 1:7" Gov Bbl DDC Complete Upper Receiver Group w/9.3" M-LOK MK16 SMR 08-176

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Geissele Automatics

Midwest Industries Upper Upper 223 Remington 556NATO 10.5" Black MLOK AR-15 - Midwest Industries

Midwest Industries Upper Upper 223 Remington 556NATO 10.5" Black MLOK AR-15

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Midwest Industries

Chiappa Firearms M4-22 Gen-II Pro .22lr 18.5" Barrel Rifle Conversion Upper Receiver Kit - 500.095 - Chiappa Firearms

Chiappa Firearms M4-22 Gen-II Pro .22lr 18.5" Barrel Rifle Conversion Upper Receiver Kit - 500.095

$371.99 $264.99

Chiappa Firearms

LANTAC AR15 300Blk 8.5 Inch 5/8-24 .750 Dia Gas Block Match Grade Cryo Treated Pistol Length Gas System Barrel Black LAN - Lantac

LANTAC AR15 300Blk 8.5 Inch 5/8-24 .750 Dia Gas Block Match Grade Cryo Treated Pistol Length Gas System Barrel Black LAN

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Noveske Chainsaw Complete Upper .300 AAC Blackout 10.5 Barrel - Noveske

Noveske Chainsaw Complete Upper .300 AAC Blackout 10.5 Barrel

$1,175.00 $1,044.77

Geissele Automatics Super Duty Mod 1 13.9" Upper 5.56x45mm 1:7 M-LOK Rail with BCG and CH, Black - 08-546B - Geissele

Geissele Automatics Super Duty Mod 1 13.9" Upper 5.56x45mm 1:7 M-LOK Rail with BCG and CH, Black - 08-546B

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Nordic Components 22LR Complete Upper, 16" Match Grade Barrel - 22RB-UPPER-16-KIT - Nordic Components

Nordic Components 22LR Complete Upper, 16" Match Grade Barrel - 22RB-UPPER-16-KIT

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Nordic Components

Angstadt Arms Upper 9mm with 6" Barrel, Black - AAUT009006 - Angstadt Arms

Angstadt Arms Upper 9mm with 6" Barrel, Black - AAUT009006

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Ballistic Advantage Premium Series Stainless .300 Blackout 8.3 - Ballistic Advantage

Ballistic Advantage Premium Series Stainless .300 Blackout 8.3

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Ballistic Advantage

Battle Arms XIPHOS AR-PCC Upper Stripped Receiver, 9mm, Billet 7075-T6 - Battle Arms Development

Battle Arms XIPHOS AR-PCC Upper Stripped Receiver, 9mm, Billet 7075-T6

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Battle Arms Development

Noveske Commando Barrel Stainless 5.56 NATO / .223 Rem 11.5 Barrel for AR-15 - Noveske

Noveske Commando Barrel Stainless 5.56 NATO / .223 Rem 11.5 Barrel for AR-15

$458.99 $324.99

5 / 186