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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 3-6 weeks to process

NARROW DOWN YOUR RESULTS BY CHOOSING A SUBCATEGORY
HARDWARE, DOORS & SMALL PARTS GAS SYSTEM PARTS
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Black Nitride Mil Spec Gas Tube (Mid-Length) Black Nitride Mil Spec Gas Tube (Mid-Length)
MSRP $15.00
Deal of the Day Price: $8.99
IN STOCK
(29)
Black Nitride Gas Block Low Profile - .750 Black Nitride Gas Block Low Profile - .750
MSRP $29.95
Deal of the Day Price: $12.99
IN STOCK
(43)
Aero Precision Stripped AR-15 Upper Receiver Aero Precision Stripped AR-15 Upper Receiver
MSRP $79.99
Aero MAP Pricing $79.99
IN STOCK
(8)
M4 Flat Top Upper Receiver – Stripped w/ T-Marks (Raw) M4 Flat Top Upper Receiver – Stripped (Raw) - BLEM
MSRP $59.99
Deal of the Day Price: $37.95
IN STOCK
(9)
Forward Assist Assembly Kit Forward Assist Assembly Kit
MSRP $12.00
SALE PRICE: $10.99
IN STOCK
(4)
Black Nitride Mil Spec Gas Tube (Pistol) Black Nitride Mil Spec Gas Tube (Pistol)
MSRP $15.00
SALE PRICE: $13.95
IN STOCK
(19)
Black Nitride Mil Spec Gas Tube (Carbine) Black Nitride Mil Spec Gas Tube (Carbine)
MSRP $15.00
SALE PRICE: $13.95
IN STOCK
(19)
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
(153)
Stripped AR-15 Upper Receiver - White Cerakote Stripped AR-15 Upper Receiver - White Cerakote
MSRP $89.99
SALE PRICE: $79.95
IN STOCK
RTB 9mm / 22LR Slick Side Upper Receiver RTB 9mm / 22LR Slick Side Upper Receiver
MSRP $99.99
Deal of the Day Price: $59.95
IN STOCK
AR15/M16 Firing Pin Retaining Pin Firing Pin Retaining Pin
Our Price: $1.00
IN STOCK
(7)
Aero Precision AR15/M4 5.56 Charging Handle Aero Precision AR15/M4 5.56 Charging Handle
Our Price: $19.99
Deal of the Day Price: $12.99
IN STOCK
(12)
Standard AR15/M4 5.56 Charging Handle Standard AR15/M4 5.56 Charging Handle
Our Price: $19.99
SALE PRICE: $13.99
IN STOCK
(13)
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)
Black Nitride Gas Block Low Profile - .936" Black Nitride Gas Block Low Profile - .936"
MSRP $29.95
Deal of the Day Price: $12.99
IN STOCK
(2)
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)
AR15 Upper Receiver Completion Kit Aero Upper Receiver Completion Kit
Our Price: $18.00
SALE PRICE: $16.99
IN STOCK
(39)
Anderson Delta Ring/Barrel Nut Kit Anderson Delta Ring/Barrel Nut Kit
Our Price: $13.30
IN STOCK
(6)
SLR Rifleworks Sentry 6 Clamp on Adjustable Gas Block - .625 SLR Rifleworks Sentry 6 Clamp on Adjustable Gas Block - .625
MSRP $119.99
SALE PRICE: $113.99
FREE GAS TUBE + ADDITIONAL DISCOUNT
IN STOCK
(4)
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)
SLR Rifleworks .750 Sentry 7 Set Screw Adjustable Gas Block SLR Rifleworks Sentry 7 Set Screw Adjustable Gas Block - .750
MSRP $119.99
SALE PRICE: $113.99
FREE GAS TUBE + ADDITIONAL DISCOUNT
IN STOCK
(27)
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
(30)
   
 

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.