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Upper Receivers & Conversion Kits

Gun Conversion Kits and Uppers

Gun Conversion Kits and Uppers

Buy all of your gun conversion kits here at Click-Click-Boom. Our conversion kits come from all the biggest brands and are built to work with many guns on the market today. Complete your conversion with Click-Click-Boom.

Firearm Gun Uppers and Conversion Kits for ARs and other rifles.

High Capacity Upper Receivers & Conversion Kits

High Capacity Upper Receivers & Conversion Kits (11)

Lowest prices on all upper receivers and conversion kits including kits for AR Rifles, upper receivers for M4s and more.

Showing 1–24 of 148 results

Yankee Hill Machine Co Black Diamond Carbine Top End Upper 556NATO 16″ Black 1:7 AR Rifles YHM Flip Front and Rear Sight 4.4 lbs YHM-7800-7
$867.60
Yankee Hill Machine Co Specter Black Diamond Carbine Top End Upper 556NATO 16″ Black 1:7 AR Rifles YHM Flip Front and Rear Sight 4.8 lbs YHM-7810-7
$900.00
Yankee Hill Machine Co Black Diamond Specter XL Carbine Top End Upper 556NATO 16″ Black 1:7 AR Rifles YHM Flip Front and Rear Sight YHM-7820-7
$923.40
Yankee Hill Machine Co YHM-15 UPPER Upper Black AR15 YHM-110
$88.65
Wilson Combat Upper 300 Blackout 16″ Black Tactical Rail Interface 10.4″, Accu-Tac Flash Hider Stainless Steel, Type 416R, 1:8, RH, Six Groove, Accu-Tac Flash Hider Complete Upper Assembly AR-15 Flat Top TR-300RC16UP
$1,250.00
Windham Weaponry HBC Upper 223 Rem 556NATO 16″ Black Heavy Barrel Chrome Lined AR Rifles UR16LHB
$560.00
Windham Weaponry SRC Upper 223 Rem 556NATO 16″ Black M4 w/Bayonet Lug and A2 Birdcage Chrome Lined AR Rifles Flat Top UR16M4FTB
$570.00
Windham Weaponry MPC Upper 223 Rem 556NATO 16″ Black M4 w/Bayonet Lug and A2 Birdcage Chrome Lined AR Rifles A3 UR16M4LHB
$570.00
Windham Weaponry VEX-SS Upper 223 Rem 556NATO 20″ Black Stainless Fluted AR Rifles Flat Top UR20FSSFTVB
$775.00
VLTOR MUR Upper Black Hammer Forged Modular Upper Receiver AR15/M16 MUR-1AB
$199.95
VLTOR Fusion Upper 223 Rem 556NATO 15″ Black KeyMod Handguard Forward Assist and Shell Deflector AR-15 VIS-F15
$509.95
Tactical Solutions TSG-22 Conv Kit 22LR Black Threaded Fits Glock 17/22 TSG-22 17/22 TE
$405.00
Tactical Solutions TSG-22 Conv Kit 22LR Black Non-Threaded Fits Glk 19/23 TSG-22 19/23 STD
$380.00
Tactical Solutions TSG-22 Conv Kit 22LR Black 1 Mag Threaded Fits Glk 19, 23 10Rd TSG-22 19/23 TE
$405.00
Tactical Solutions TSG-22 Conv Kit 22LR Black 1 Mag Non-Threaded Fits Glk 17, 22 Fits Glk 19/23 10Rd TSG-22 17/22 STD
$380.00
Smith & Wesson M&P 15 Upper 223 Rem 16″ Black M4 w/Bayonet Lug and A2 Birdcage Complete AR Rifles 812003
$689.00
Smith & Wesson M&P 15 Upper 300 Blackout 16″ Black Four Rail Handguard Complete AR Rifles 812012
$819.00
Spike’s Tactical Generation 2 Billet Upper 223 Rem 556NATO Black Mil-Spec Barrel Nut SFT50B2
$270.00
Spike’s Tactical Upper Black Forward Assist and Ejection Door installed Machined from a Mil-Spec 7075 T6 forging AR Rifles None SFT50M4
$115.00
Spike’s Tactical Law Enforcement Upper 223 Rem 556NATO 16″ Black 1:7 Chrome Lined Flat Top AR Rifles A2 Front STU5025-M4S
$580.00
Spike’s Tactical Upper 223 Rem 556NATO 16″ Black Four Rail Handguard 1:7 Chrome Lined Flat Top AR Rifles STU5025-R9S
$779.00
Spike’s Tactical Law Enforcement Upper 223 Rem 556NATO 16″ Black SAR Rail System and No Mags 1:7 A2 M4 LE w/12″ SAR Rail AR Rifles STU5025-S2S
$868.00
Spike’s Tactical Upper 223 Rem 556NATO 16″ Black 1:7 Mid-length Front Sight Post STU5035-MLS
$590.00
Spike’s Tactical Law Enforcement Upper 223 Rem 556NATO 16″ Black SAR Rail System and No Mags 1:7 Mid-length A2 Mid LE w/12″ SAR3 Rail AR Rifles STU5035-S2S
$878.00

Showing 1–24 of 148 results