AR-15 5.56 NATO 7.5" Upper Receiver Free Float KeyMod Handguard Pistol Upper

Description

Up for auction is an AR-15 upper receiver assembly chambered in 5.56 NATO. Featuring a compact 7.5-inch barrel and a free-float KeyMod handguard, this upper delivers a highly maneuverable and modern configuration popular among AR builders and enthusiasts seeking a compact setup.

The free-float KeyMod handguard provides a lightweight and streamlined platform for accessory mounting while maintaining a slim profile for improved handling. The free-float design helps support consistent barrel performance by reducing external pressure on the barrel during use. The barrel retains a sharp, reflective bore.

The 7.5-inch barrel configuration creates an extremely compact AR platform suitable for close-range applications, range use, or as the foundation for a custom pistol build. Its short overall length makes it highly responsive and easy to handle in confined spaces.

The AR-15 platform remains the most versatile modern sporting rifle system available, and this upper represents a compact variation that maintains full modular compatibility with standard AR components.

THIS ITEM IS AS PICTURED WITH NO FURTHER ATTACHMENTS. ALL SALES ARE FINAL. PLEASE REFER TO THE AUCTION DESCRIPTION, LOT #1 DESCRIPTION AND TERMS OF SALE BEFORE BIDDING. UNTIL FURTHER NOTICE, NO SALES TO COLORADO WILL BE ALLOWED GOOD LUCK BIDDING, WE HOPE YOU FIND THE ITEM YOU ARE LOOKING FOR!

Estimate - Range: 300-400

Buyer's Premium

23%

AR-15 5.56 NATO 7.5" Upper Receiver Free Float KeyMod Handguard Pistol Upper

Lot 0086

Estimate $0-$0

Jul 5, 2026, 1:59 PM EDT

Starting Price

Secure

$10

1 bidder is watching this item

LiveAuctioneers Purchase Protection

Vetted auction houses

Secure, online bidding

Returns guaranteed for misrepresented listings

Dedicated support when you need it

OSG's 4th of July Tactical Weekend Auction - 2026

Jun 12, 2026 8:00 PM EDT

Littleton, CO, United States

Aero Precision X15 Receiver Set: The Aero Precision X15 receiver set is a forged AR-15 matched upper and lower combination thats widely used as a solid, no-nonsense foundation for custom builds. Its part of Aeros more mil-spec style

Aero Precision X15 Receiver Set

AR15 5.56 NATO 11.5" Free Float M-LOK Carbine Gas FDE Barrel ASSY.: Up for auction is an AR-15 barrel assembly chambered in 5.56 NATO. This is a parts-only listing (no upper receiver included). Featuring an 11.5-inch barrel with a carbine-length gas system and a

AR15 5.56 NATO 11.5" Free Float M-LOK Carbine Gas FDE Barrel ASSY.

Aero Precision X15 Receiver Set: The Aero Precision X15 receiver set is a forged AR-15 matched upper and lower combination thats widely used as a solid, no-nonsense foundation for custom builds. Its part of Aeros more mil-spec style

Aero Precision X15 Receiver Set

AR15 5.56 NATO 16" Upper Receiver Carbine Gas Slim Handguards Rifle Upper: Up for auction is an AR-15 upper receiver assembly chambered in 5.56 NATO. Featuring a 16-inch barrel and a carbine-length gas system, this upper delivers the proven reliability and familiar handling

AR15 5.56 NATO 16" Upper Receiver Carbine Gas Slim Handguards Rifle Upper

Aero Precision X15 Receiver Set: The Aero Precision X15 receiver set is a forged AR-15 matched upper and lower combination thats widely used as a solid, no-nonsense foundation for custom builds. Its part of Aeros more mil-spec style

Aero Precision X15 Receiver Set

AR15 5.56 NATO Upper Receiver 16" Barrel Carbine Gas Assembly: Up for auction is an AR-15 upper receiver assembly chambered in 5.56 NATO. Featuring a 16-inch barrel and a proven carbine-length gas system, this upper offers the reliability, versatility, and

AR15 5.56 NATO Upper Receiver 16" Barrel Carbine Gas Assembly

Aero Precision X15 Stripped Lower Receiver FDE AR15 Lower: Up for auction is an Aero Precision X15 Stripped Lower Receiver finished in Flat Dark Earth (FDE). Manufactured by one of the most respected names in the AR industry, this receiver provides an

Aero Precision X15 Stripped Lower Receiver FDE AR15 Lower

NIB Colt AR15 Upper Receiver 16" Government Profile Barrel Assembly

Aero Precision EPC-9 Stripped Lower with Buffer, Spring & Barrel: Up for auction is an Aero Precision EPC-9 stripped lower receiver package. Designed specifically for 9mm AR-platform builds, the EPC-9 has become one of the most respected foundations for modern

Aero Precision EPC-9 Stripped Lower with Buffer, Spring & Barrel

RARE Vintage 1960's-1970's Colt 11.5" AR15 Upper Big Pin A1 Carry Handle Patent Pending: Up for auction is a vintage Colt AR-15 upper receiver assembly featuring an 11.5-inch barrel and a highly desirable collection of early-production Colt features. This upper represents a scarce piece

RARE Vintage 1960's-1970's Colt 11.5" AR15 Upper Big Pin A1 Carry Handle Patent Pending

Aero Precision Gen 2 Stripped Lower Receiver FDE AR15 Lower: Up for auction is an Aero Precision Gen 2 Stripped Lower Receiver finished in Flat Dark Earth (FDE). Built by one of the most respected manufacturers in the AR industry, this receiver provides an

Aero Precision Gen 2 Stripped Lower Receiver FDE AR15 Lower

Vintage Colt SP1 M16A1 Kit 20" Barrel Triangle Handguards Big Pin: Up for auction is a vintage Colt SP1 M16A1-style upper receiver assembly featuring a 20-inch barrel, large front pivot pin ("big pin") configuration, and original triangle handguards. This upper

Vintage Colt SP1 M16A1 Kit 20" Barrel Triangle Handguards Big Pin

Diamondback DB10 Stripped Upper & Lower Receiver Set FDE .308 AR: Up for auction is a Diamondback Firearms DB10 stripped upper and lower receiver set finished in Flat Dark Earth (FDE). Designed for the powerful .308 Winchester / 7.62 NATO AR platform, this matched

Diamondback DB10 Stripped Upper & Lower Receiver Set FDE .308 AR

Armalite Pattern AR-10 .308 Winchester Upper Receiver 20" Barrel KeyMod Handguard: Up for auction is an AR-10 upper receiver assembly chambered in .308 Winchester / 7.62 NATO. Featuring a 20-inch barrel and a KeyMod handguard, this upper is configured to take full advantage of the

Armalite Pattern AR-10 .308 Winchester Upper Receiver 20" Barrel KeyMod Handguard

Aero Precision M4E1 Complete Upper 16" Barrel S-One Handguard: Up for auction is an Aero Precision M4E1 complete upper receiver assembly featuring a 16-inch barrel and Aero Precision's popular ATLAS S-One handguard. Combining premium construction, modern

Aero Precision M4E1 Complete Upper 16" Barrel S-One Handguard

Military Surplus 14.5" SOCOM Profile Barrel Assembly KAC Quad Rail FSP

NEW Ballistic Advantage 11.5" 5.56 NATO 1:7 Twist AR15 Barrel: Up for auction is a new Ballistic Advantage 11.5-inch AR-15 barrel chambered in 5.56 NATO with a 1:7 twist rate. Ballistic Advantage has earned a strong reputation among AR enthusiasts for producing

NEW Ballistic Advantage 11.5" 5.56 NATO 1:7 Twist AR15 Barrel

NEW Ballistic Advantage 14.5" Government Profile Barrel Front Sight Post 5.56 NATO

Military Surplus M16A4 Furniture Set KAC Handguard Carry Handle & Fixed Stock: Up for auction is a genuine military surplus M16A4 furniture set featuring a Knight's Armament quad rail handguard, fixed rifle stock, A2 pistol grip, detachable carry handle, and Picatinny sling

Military Surplus M16A4 Furniture Set KAC Handguard Carry Handle & Fixed Stock

NEW Ballistic Advantage 16" .308 Winchester 1:10 Twist Barrel: Up for auction is a new Ballistic Advantage 16-inch barrel chambered in .308 Winchester / 7.62 NATO with a 1:10 twist rate. Built by one of the most respected barrel manufacturers in the AR industry,

NEW Ballistic Advantage 16" .308 Winchester 1:10 Twist Barrel

Related Items

DPMS Panther Arms Model A-15 Semi-Automatic Rifle 5.56 NATO: This DPMS Panther Arms Model A-15 is a semi-automatic rifle chambered in 5.56 NATO, configured for modern tactical utility. The firearm features a barrel with a 1:8 twist rate, fitted with a standard

11 hrs LeftDPMS Panther Arms Model A-15 Semi-Automatic Rifle 5.56 NATO

COLT MATCH TARGET AR-15 W/ BUSHMASTER UPPER, .350 LEGEND/5.56 NATO: COLT MATCH TARGET AR-15 W/ BUSHMASTER UPPER, .350 LEGEND/5.56 NATO An offering of an original Colt Match Target AR-15 receiver mounted with a Bushmaster upper receiver. The rifle features a black fini

Jun 26, 2026COLT MATCH TARGET AR-15 W/ BUSHMASTER UPPER, .350 LEGEND/5.56 NATO

(M) COLT MODULAR CARBINE SEMI-AUTOMATIC .308 RIFLE.: Four prong spiral flash hider, gas block with bayonet lug and folding front sight. Semi-monolithic quad rail system with removable bottom rails. Colt branded folding rear sight. Colt lower with ambide

Jun 23, 2026(M) COLT MODULAR CARBINE SEMI-AUTOMATIC .308 RIFLE.

Rugged Custom AR15 Varminter 20" Barrel Free Float Bipod Precision Rifle 5.56: Up for auction is a custom-built AR-15 Varminter chambered in 5.56 NATO. Designed with accuracy and stability in mind, this rifle features a 20-inch barrel and a free-float tube handguard, creating a

Rugged Custom AR15 Varminter 20" Barrel Free Float Bipod Precision Rifle 5.56

Amazing POF USA Revolution SMR 6.5 Creedmoor Fluted Barrel Precision AR10 Rifle: Up for auction is a POF-USA Revolution SMR chambered in 6.5 Creedmoor. This premium semi-automatic precision rifle combines the long-range performance of the 6.5 Creedmoor cartridge with the innovativ

Amazing POF USA Revolution SMR 6.5 Creedmoor Fluted Barrel Precision AR10 Rifle

(M) CUSTOMIZED ARMALITE M15 SEMI-AUTOMATIC AR-15 RIFLE.: Pinned-and-welded AAC 51T three prong flash hider, fluted Wilson Combat barrel, Wilson Combat forearm with attachment points for rails. Wilson Combat upper with Radian Arms Raptor charging handle, unm

Jun 23, 2026(M) CUSTOMIZED ARMALITE M15 SEMI-AUTOMATIC AR-15 RIFLE.

Absolutely Stunning AR15 5.56 NATO 20" Fluted Barrel RifleSpeed Gas Block UBR Stock: Up for auction is a custom AR-15 chambered in 5.56 NATO. Built as a premium precision-oriented rifle, this example features a 20-inch fluted barrel and a collection of high-end components that elevate

Absolutely Stunning AR15 5.56 NATO 20" Fluted Barrel RifleSpeed Gas Block UBR Stock

(M) TROY DEFENSE TROY CARBINE .300 BLACKOUT SEMI-AUTOMATIC PISTOL: AAC 51T three prong flash hider, Wilson Combat MLOK forearm, unmarked upper with "300 AAC" on left side, Rainier Arms Raptor charging handle, Troy Defense lower with single stage trigger, Wilson Comba

Jun 23, 2026(M) TROY DEFENSE TROY CARBINE .300 BLACKOUT SEMI-AUTOMATIC PISTOL

LaRue Tactical Stealth Semi-Automatic Upper Receiver Assembly .223/5.56 with 16 Inch Barrel: This lot consists of a complete AR-15 pattern upper receiver assembly chambered for .223 Remington and 5.56x45mm NATO cartridges. The unit features a 16-inch black finished barrel equipped with a stan

11 hrs LeftLaRue Tactical Stealth Semi-Automatic Upper Receiver Assembly .223/5.56 with 16 Inch Barrel

Amazing Daniel Defense DDM4 V7 RIS III Geissele SSA-E MBUS Pro AR15 Rifle: Up for auction is a Daniel Defense DDM4 V7 chambered in 5.56 NATO. Built around one of the most respected AR-15 platforms on the market, this rifle combines Daniel Defense's renowned manufacturing qua

Amazing Daniel Defense DDM4 V7 RIS III Geissele SSA-E MBUS Pro AR15 Rifle

Rugged CMMG MK4 AR15 20" Bull Barrel Free Float Precision Rifle 5.56 NATO: Up for auction is a CMMG MK4 chambered in 5.56 NATO. This precision-oriented AR-15 features a heavy 20-inch bull barrel and free-float tube handguard, creating an exceptionally stable shooting platfor

Rugged CMMG MK4 AR15 20" Bull Barrel Free Float Precision Rifle 5.56 NATO

Desirable Rock River Arms LAR-15 Stainless Barrel Free Float AR15 Precision Rifle: Up for auction is a Rock River Arms LAR-15 chambered in 5.56 NATO. Built by one of the most respected names in the AR industry, this rifle combines accuracy-focused features with the proven reliabilit

Desirable Rock River Arms LAR-15 Stainless Barrel Free Float AR15 Precision Rifle

Related Searches

Browning Rifles guns & firearms Mauser Rifles Old Bolt Action Rifles Old Lever Action Rifles Percussion Cap Rifles shotguns Used Henry Rifles Vintage Firearms Vintage Toy Rifles Price Results Auctions in Colorado

TOP