Complete Upper Receivers

Windham Weaponry .223/5.56 Rifle Kit with Diamondhead Rear Flip Sight
Upper receiver rifle kit 16m4 less handle rear flip w/bolt, stock & magazine

SKU: KIT-WKUR16M4LHRFB-C

MSRP: $845.00

On Backorder

This 16″ MPC-RF (Rear Flip) Complete Upper Receiver / Barrel Assembly Kit includes the Lower Receiver Parts Kit, a complete...
Windham Weaponry .308 20in Flattop Upper Receiver Assembly Less Bolt Carrier and Charging Handle
Upper receiver 20 fluted flattop 308

SKU: ur20fft-308

MSRP: $995.00

On Backorder

This highly accurate .308 Caliber Windham Weaponry Flattop Upper Receiver Assembly features a Magpul MOE M-Lok Rifle Length Forend installed...
Upper receiver kit 16 450 w/bolt & magazine shaved front site

SKU: KIT-UR16SFSB-450

MSRP: $795.00

On Backorder

Windham Weaponry’s powerful 450 Thumper is available as a complete Upper Receiver Assembly – ready to snap onto your AR15...
Upper receiver kit 16 flattop 450 w/ bolt & magazine

SKU: KIT-UR16FTB-450

MSRP: $795.00

On Backorder

Windham Weaponry’s powerful .450 Thumper is available as a complete upper receiver assembly – ready to snap onto your AR15...
Upper receiver 14m4 phantom A4 w/bolt

MSRP: $550.00$715.00

On Backorder

This M4 Barreled Upper Assembly is complete and ready to snap onto your Lower. The highly accurate 14.5″ M4 Profile...
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Upper receiver 14m4 1x7 A4 w/bolt

SKU: ur14m4-7a4b

MSRP: $520.00$685.00

On Backorder

This M4 Barreled Upper Assembly is complete and ready to snap onto your Lower. The highly accurate 14.5” M4 Profile...
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Upper receiver 16 flattop w/bolt 300 black out

MSRP: $445.00$585.00

On Backorder

Add the stopping power of the .300 Blackout Caliber to your rifle with this Windham Weaponry Flattop Upper Receiver Assembly....
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Upper receiver 16m4 shaved front site CDI w/bolt

MSRP: $955.00$1,100.00

On Backorder

From our popular CDI Rifle, this accessorized Upper Receiver / Barrel Assembly comes complete with 15″ Windham Weaponry Aluminum M-LOK...
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Windham Weaponry 16in Complete Ban Compliant Flat-top Upper Receiver / Barrel Assembly for 7.62x39 with Magazine
Upper receiver kit 16m4 762x39 flattop w/carlson comp, bolt & magazine

MSRP: $705.00$755.00

On Backorder

For states with regulations against bayonet lugs, flash hiders and high capacity magazines, this complete Upper Receiver Assembly in 7.62...
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Upper receiver 16 dissipator A4 w/bolt

MSRP: $565.00$740.00

On Backorder

This 16″ Dissipator Heavy Profile Upper Receiver/ Barrel Assembly is complete, ready to snap onto your lower and take to...
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Upper receiver 16m4 dissipator A4 w/bolt

MSRP: $565.00$740.00

On Backorder

This 16″ Dissipator M4 Profile Upper Receiver Barrel Assembly is complete, ready to snap onto your lower and take to...
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Upper receiver 16 A4 w/bolt

MSRP: $445.00$650.00

On Backorder

This heavy barreled Upper Assembly is complete and ready to snap onto your Lower. A superbly accurate 16” heavy profile barrel...
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Windham Weaponry 16in MPC M4 Profile Rifle Kit
Upper receiver rifle kit 16m4 A4 w/bolt complete less stripped lower

SKU: KIT-WKUR16M4A4B

MSRP: $895.00

On Backorder

Due to state regulations, we can not ship this kit with 30 round magazine to California, District of Columbia, Colorado,...
Upper receiver assembly complete MPC 16m4 A4 w/bolt

MSRP: $445.00$649.00

On Backorder

This  .223/5.56 M4 Barreled Upper Assembly “MPC” is complete and ready to snap onto your Lower. The highly accurate 16″...
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Windham Weaponry 16in MPC-RF-MFT Complete Upper Receiver / Barrel Assembly
Upper receiver rifle kit 16 less handle mft hgds rear flip w/bolt less stripped lower receiver

SKU: KIT-WKUR16M4LHRFMFB

MSRP: $915.00

On Backorder

This M4 Barreled Upper Assembly is complete and ready to snap onto your Stripped Lower when completed. It’s highly accurate...
Upper receiver rifle kit 16 flattop w/bolt complete less lower receiver

SKU: KIT-WKUR16FTB

MSRP: $895.00

On Backorder

The Heavy Barreled version of our popular SRC is a straight turned design .745″ in diameter forward of the gas...
Upper receiver 16 flattop w/bolt

MSRP: $620.00$685.00

On Backorder

Windham Weaponry has had many requests for a Heavy Barreled version of our popular SRC Upper, so this complete Upper...
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Upper receiver rifle kit 16m4 flattop w/bolt complete less stripped lower receiver

SKU: KIT-WKUR16M4FTB

MSRP: $895.00

On Backorder

Due to state regulations, we can not ship this kit with 30 round magazine to California, District of Columbia, Colorado,...
Upper receiver 16m4 flattop w/bolt

MSRP: $463.00$588.00

On Backorder

This is the complete M4 Barreled Upper Assembly from our unique “SRC” rifle. Its tack-driving 16” M4 profile barrel is...
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Upper receiver 16 flattop 308

SKU: ur16ft-308

MSRP: $622.00

On Backorder

This .308 Barreled Upper Assembly includes a CNC machined 7075T6 aircraft aluminum flat top Upper Receiver with Bolt Carrier Assembly,...
Windham Weaponry 16in Windham Weaponry .300 Blackout Rifle Kit
Upper receiver rifle kit 16 flattop 300 blackout w/bolt complete less stripped lower receiver

SKU: KIT-WKUR16FTB-300

MSRP: $895.00

On Backorder

This is the complete 16” Medium profile barreled Upper Assembly from our unique “300 Blackout SRC” rifle. The 16” Medium...
Windham Weaponry 18in Fluted Upper Receiver Assembly for .308
Upper receiver 18 fluted flattop w/bolt 308

SKU: ur18fftb-308

MSRP: $895.00

On Backorder

This complete Windham Weaponry 18″ Fluted .308 Barreled Upper Assembly includes a CNC machined 7075T6 aircraft  aluminum flat top Upper...
Windham Weaponry 18in Fluted Upper Receiver Assembly less Charging Handle & Bolt Carrier for Windham Weaponry .308
Upper receiver 18 fluted flattop 308

SKU: ur18fft-308

MSRP: $775.95

On Backorder

This 18″ Fluted .308 Barreled Upper Assembly includes a CNC machined 7075T6 aircraft aluminum flat top Upper Receiver with Forward...
Windham Weaponry 20in A2 Gov't. Profile Upper Receiver Assembly for AR15 / M16
Upper receiver 20 gvt 1x7 A4 w/bolt

MSRP: $460.00$665.00

On Backorder

This A2 Gov’t. profile barreled Upper Assembly is complete, ready to snap onto your lower and take to the range....
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Windham Weaponry 20in A2 Gov't. Profile Upper Receiver Assembly for AR15 / M16
Upper receiver assembly complete 20 gvt A4 w/bolt

MSRP: $460.00$665.00

In Stock

This A2 Gov’t. profile barreled Upper Assembly is complete, ready to snap onto your lower and take to the range....
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Upper receiver 20 fluted ss flattop threaded w/bolt

SKU: ur20fsssfsb

MSRP: $805.00

In Stock

This Assembly offers an upper from our popular Varmint Exterminator Rifle. This superbly accurate upper is CNC Machined from 7075T6...
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Upper receiver kit 16m4 flattop 762x39 w/bolt & magazine

SKU: kit-ur16m4ftb-762

MSRP: $605.00

On Backorder

Just add your AR15 Lower Receiver/Stock Assembly to this 7.62 X 39mm Caliber Windham Weaponry Flattop Upper Kit and you’re...
Windham Weaponry 7.62 x 39mm MPC Rifle Kit
Upper receiver rifle kit 16m4 A4 762x39 w/bolt, stock & magazine

SKU: KIT-WKUR16M4A4B-762

MSRP: $905.00

This 16″ 7.62x39mm MPC Complete Upper Receiver / Barrel Assembly Kit includes the Lower Receiver Parts Kit, a complete Telestock...

Out of stock

Upper receiver rifle kit 16m4 flattop 762x39 w/bolt, stock & magazine

SKU: KIT-WKUR16M4FTB-762

MSRP: $815.00

This 16″7.62x39mm Flat-top Complete Upper Receiver / Barrel Assembly Kit includes the Lower Receiver Parts Kit, a complete Telestock Kit,...

Out of stock

Upper receiver 16m4 flattop 762x39

MSRP: $645.00$685.00

On Backorder

This is the complete M4 Barreled Upper Assembly from our 7.62 x 39mm SRC rifle. Its 16″ M4 profile barrel...
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Upper Receiver Kit- 16m4 less handle rear flip with bolt-762

MSRP: $590.00$735.00

On Backorder

This is a complete upper assembly from our popular 7.62×39 rifle, including charging handle and bolt carrier group. Its tack-driving...
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Upper Receiver Complete 20 GVT-7 A1 with bolt

SKU: UR20GVTA1B-7

MSRP: $730.00

On Backorder

This is the complete upper assembly from our re-imagined A1 Government rifle – this rifle includes classic features, but it’s...
UPPER RECEIVER COMPLETE 20 GVT 1X7 -A1 LESS BOLT

SKU: UR20GVTA1-7

MSRP: $606.00

On Backorder

This is the complete upper assembly from our re-imagined A1 Government rifle – it includes classic features, but it’s built...
Upper receiver 16 flattop w/bolt 308

SKU: ur16ftb-308

MSRP: $875.00

On Backorder

This complete Windham Weaponry .308 Barreled Upper Assembly includes a CNC machined 7075T6 aircraft aluminum flat top Upper Receiver with...
Upper receiver 18 fluted shaved front site w/ bolt 308

SKU: ur18fsfsb-308

MSRP: $1,025.00

On Backorder

We’ve added the Windham Weaponry MLOK 15” Handguard to this .308 Caliber Windham Weaponry Flattop Upper Receiver Assembly. The complete...
Windham Weaponry Complete 20in .308 Flattop Upper Receiver Assembly
Upper receiver 20 fluted flattop w/bolt 308

SKU: ur20fftb-308

MSRP: $955.00

On Backorder

This complete .308 Caliber Windham Weaponry Flattop Upper Receiver Assembly is ready to snap onto your Windham Weaponry .308 Lower...
Upper receiver kit 16m4 762x39 less handle w/bolt & magazine

SKU: KIT-UR16M4LHB-762x39

MSRP: $670.00

On Backorder

This AR15 Complete Upper Receiver Assembly in 7.62 X 39mm Caliber features an A2 Front Sight with Sling Swivel and...
Upper Receiver / Barrel Assembly for 7.62x39 with A2 Front Sight
Windham Weaponry Upper Receiver for 7.62x39 with A2 Front Sight

SKU: KIT-UR16M4A4B-762x39

MSRP: $755.00

On Backorder

This AR15 Complete Upper Receiver Assembly in 7.62 X 39mm Caliber features an A2 Front Sight with Sling Swivel and...

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