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BARRELED UPPER RECEIVERS UPPER RECEIVERS CHARGING HANDLES
Most items in this category will ship directly from CMMG. We've worked out special pricing with CMMG on their complete uppers, and are able to extend the savings to you.

The products that ship from CMMG will be clearly marked on the product page and you will receive another reminder when the product is added to the cart. Only these specific items ship from CMMG. Everything else is stocked right here in our warehouse and ships fast. Items that ship from CMMG may take 2-14 days to process but usually ship within 2 business days.

NARROW DOWN YOUR RESULTS BY CHOOSING A SUBCATEGORY
HARDWARE & SMALL PARTS GAS SYSTEM PARTS
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Aero Precision AR-15 Upper Slick Slide w/ No Forward Assist Aero Precision Assembled AR-15 Upper No Forward Assist - *Slick Side*
MSRP $95.00
Deal of the Day Price: $49.99
IN STOCK
(26)
Radical Firearms Low Profile Steel Gas Block - .750 Radical Firearms Low Profile Steel Gas Block - .750
MSRP $24.00
SALE PRICE: $14.99
IN STOCK
(16)
AR15 Upper Receiver Completion Kit Aero Upper Receiver Completion Kit
Our Price: $18.00
SALE PRICE: $16.99
IN STOCK
(38)
AR15/M16 Firing Pin Retaining Pin Firing Pin Retaining Pin
Our Price: $1.00
IN STOCK
(7)
Black Nitride Mil Spec Gas Tube (Pistol) Black Nitride Mil Spec Gas Tube (Pistol)
MSRP $15.00
SALE PRICE: $13.99
IN STOCK
(16)
Black Nitride Mil Spec Gas Tube (Carbine) Black Nitride Mil Spec Gas Tube (Carbine)
MSRP $15.00
SALE PRICE: $13.99
IN STOCK
(19)
Black Nitride Mil Spec Gas Tube (Mid-Length) Black Nitride Mil Spec Gas Tube (Mid-Length)
MSRP $15.00
SALE PRICE: $13.99
IN STOCK
(25)
Strike Industries Enhanced Bolt Catch Strike Industries Enhanced Bolt Catch
MSRP $13.95
SALE PRICE: $11.95
IN STOCK
(17)
Strike Industries Charging Handle Extended Latch Strike Industries Charging Handle Extended Latch
MSRP $9.95
SALE PRICE: $8.95
IN STOCK
(11)
Strike Industries Extended Bolt Catch Strike Industries Extended Bolt Catch
MSRP $14.95
SALE PRICE: $12.95
IN STOCK
(2)
Black Nitride Gas Block (.625) Low Profile - .625 Black Nitride Gas Block (.625) Low Profile - .625
MSRP $29.95
SALE PRICE: $15.00
IN STOCK
(28)
M4 Flat Top Blemished Nickel Teflon AR-15 Upper Receiver Nickel Teflon Upper Receiver (M4 Flat Top) - Complete ***BLEM***
Our Price: $179.00
SALE PRICE: $99.99
FREE SHIPPING APPLIES TO ENTIRE CART
IN STOCK
(149)
Anderson Delta Ring/Barrel Nut Kit Anderson Delta Ring/Barrel Nut Kit
Our Price: $13.30
IN STOCK
(6)
Black Nitride Mil Spec Gas Tube (Rifle Length) Black Nitride Mil Spec Gas Tube (Rifle Length)
MSRP $15.00
SALE PRICE: $13.99
IN STOCK
(3)
Anderson Anodized Upper Receiver - Stripped Anderson Anodized M4 Upper Receiver - Stripped
MSRP $55.00
SALE PRICE: $42.99
IN STOCK
(18)
SLR Rifleworks Sentry 7 Clamp Premium Adjustable Gas Block - .750 SLR Rifleworks Sentry 7 Clamp On Adjustable Gas Block - .750
MSRP $119.99
SALE PRICE: $113.99
FREE GAS TUBE + ADDITIONAL DISCOUNT
IN STOCK
(14)
Spikes Tactical Micro Gas Block (.625) Low Profile Spikes Tactical Micro Gas Block (.625) Low Profile
MSRP $29.95
SALE PRICE: $26.96
IN STOCK
(31)
Strike Industries AR-15 M16 Gas Tube - (Rifle-Length) Strike Industries AR-15 M16 Gas Tube - (Rifle-Length)
MSRP $16.99
SALE PRICE: $14.99
IN STOCK
(8)
SLR Rifleworks Sentry 6 Set Screw Adjustable Gas Block - .625 SLR Rifleworks Sentry 6 Set Screw Adjustable Gas Block - .625
MSRP $119.99
SALE PRICE: $113.99
FREE GAS TUBE + ADDITIONAL DISCOUNT
IN STOCK
(7)
   
 

AR15 Upper Receiver Replacement Parts

We carry everything you need to upgrade your AR15 upper receiver with the best replacement parts from top brands including Spike’s Tactical, Rock River Arms, BCM and more. Our selection of mil-spec upper receiver parts and hardware includes assembly and installation kits, as well as custom ejection port dust covers. We have the most versatile ambidextrous charging handles, gas system parts including gas blocks and tubes, complete upper receivers and everything else you may need to upgrade or repair your AR15 upper receiver assembly. All of our replacement AR15 upper receiver parts are made from the most durable materials and are guaranteed to fit with no additional machining.

All of our AR15 upper receiver parts and AR15 hardware are made from steel, aluminum and other durable materials. Buy now to enjoy our everyday low prices and fast shipping on all orders or contact us for more information and our experts will help you find everything you need. We also offer a Cerakoting service for several of our popular upper receivers.