AR-15 Upper Parts

Centurion Arms Hammer Forged 5.56 Mid-Length Barrel - 14.5" The Centurion Arms cold hammer forged 5.56 AR-15 barrels are made from high quality 41V50 Chrome Moly Vanadium—steel specifically designed for machine gun barrels—so you know it will...

The Centurion Arms cold hammer forged 5.56 AR-15 barrels are made from high quality 41V50 Chrome Moly Vanadium—steel specifically designed for machine gun barrels—so you know it will last thousands of rounds. In order to get the 1:7 twist...

Centurion Arms MK12 Rifle Barrels are the result of development done by the U.S. government to give Special Operations forces the best possible weapon system. Troops who have carried these Rifle Barrels from Centurion Arms give them high marks for...

Centurion Arms MK12 18" 5.56 NATO 1:7 416R Stainless Steel Rifle Length Barrel These are Crane Spec. MK12 barrels. These barrels are the result of tens of thousands of dollars in development done by the U.S. government to give our Special Operations guys...

Centurion Arms RECCE 5.56 NATO 1:7 R5 416R Stainless Steel Mid-Length Barrel These are produced with the same chamber as our Spec. MK12 barrels with a slightly heavier profile. Built for reliability and accuracy. Best option for long range, high...

CMC Triggers AR 15 Carbine Length Gas Tube The Nitride Coated Gas Tube is an essential component for the AR-15 family of firearms. CMC Triggers Nitride Stainless Steel AR15 / AR10 Gas Tubes Gas Tubes resists heat and corrosion. Ensures consistent gas...

CMMG 16.1" 300 AAC Blackout AR 15 Barrel The CMMG 16.1" 300 AAC Blackout AR 15 Barrel is perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly head spaced...

CMMG 6.5 Grendel AR 15 Bolt Carrier Group This BCG is designed to operate with either 6.5 Grendel or Hornady's new 6mm ARC. Will not work with CMMG MkW platform. It is designed for standard AR variants. Features: CALIBER: 6.5 Grendel/6mm ARC

CMMG 8" 300 AAC Blackout AR 15 Barrel Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced. ALL NFA RULES APPLY Features: 8.0" Medium Taper...

CMMG Stainless Steel Carbine Length Gas Tube The CMMG Stainless Steel Carbine Length Gas Tube is an indispensable component for AR enthusiasts, whether constructing a new firearm or replacing parts in an existing one. Manufactured from premium stainless...

CMMG Stainless Steel Mid Length Gas Tube The CMMG Stainless Steel Mid Length Gas Tube is an indispensable component for AR enthusiasts, whether constructing a new firearm or replacing parts in an existing one. Manufactured from premium stainless steel,...

Colt's Manufacturing Mil-Spec Bolt Carrier Group 223Rem/556NATO - Black This Colt Mil-Spec 5.56 Bolt Carrier Group is made to Mil-Spec for long lasting reliability and durability. Made from high quality steel with a durable matte black Parkerized finish,...

Criterion Barrels 10.5" .223 Wylde Core Phosphate/Chrome-Lined Carbine Length Barrel Optimized Weight Distribution and Superior Performance for Tactical Shooters. The Criterion Barrels 10.5" .223 Wylde CORE Phosphate/Chrome-Lined Carbine Length Barrel is...

Criterion Barrels 10.5" .223 Wylde Hybrid Phosphate/Chrome-Lined Carbine Length Barrel Compact Precision and Reliability with a Balanced Hybrid Contour. The Criterion Barrels 10.5" .223 Wylde Hybrid Phosphate/Chrome-Lined Carbine Length Barrel is...

Criterion Barrels 10.5" .300BLK Hybrid Nitride Pistol Length Barrel Optimized for Suppressed and Unsuppressed Fire with Superior Heat Absorption and Balance. The Criterion Barrels 10.5" .300 BLK Hybrid Nitride Pistol Length Barrel is engineered to...

Criterion Barrels 11.5" .223 Wylde Core Phosphate/Chrome-Lined Carbine Length Barrel Optimized Weight Distribution and Precision for Tactical and Field Use. The Criterion Barrels 11.5" .223 Wylde CORE Phosphate/Chrome-Lined Carbine Length Barrel is built...

Criterion Barrels 11.5" .223 Wylde Hybrid Phosphate/Chrome-Lined Carbine Length Barrel Compact and Balanced Performance for Versatile Tactical Applications. The Criterion Barrels 11.5" .223 Wylde Hybrid Phosphate/Chrome-Lined Carbine Length Barrel is...

Criterion Barrels 12.5" .223 Wylde Core Phosphate/Chrome-Lined Carbine Length Barrel Optimized Weight Distribution and Superior Handling for Tactical Applications. The Criterion Barrels 12.5" .223 Wylde CORE Phosphate/Chrome-Lined Carbine Length Barrel...

Criterion Barrels 12.5" .223 Wylde Hybrid Phosphate/Chrome-Lined Carbine Length Barrel Uncompromising Accuracy and Durability in a Compact Hybrid Design. The Criterion Barrels 12.5" .223 Wylde Hybrid Phosphate/Chrome-Lined Carbine Length Barrel offers...

Criterion Barrels 12.5" .223 Wylde Ultralight Phosphate/Chrome-Lined Carbine Length Barrel Maximum Mobility and Lightweight Performance for Hard Use Scenarios. The Criterion Barrels 12.5" .223 Wylde Ultralight Phosphate/Chrome-Lined Carbine Length Barrel...

Criterion Barrels 13.9" .223 Wylde Hybrid Phosphate/Chrome-Lined Midlength Barrel Balanced Precision and Durability for Tactical, Field, and Competition Use. The Criterion Barrels 13.9" .223 Wylde Hybrid Phosphate/Chrome-Lined Midlength Barrel is...

Criterion Barrels 14.5" .223 Wylde Core Phosphate/Chrome-Lined Midlength Barrel Optimized Weight Distribution and Precision for Tactical Performance. The Criterion Barrels 14.5" .223 Wylde CORE Phosphate/Chrome-Lined Midlength Barrel is designed to meet...

Criterion Barrels 14.5" .223 Wylde Hybrid Phosphate/Chrome-Lined Midlength Barrel Precision, Durability, and Lightweight Performance for Your AR-15 Build. The Criterion Barrels 14.5" .223 Wylde Hybrid Phosphate/Chrome-Lined Midlength Barrel is engineered...

Criterion Barrels 14.5" .223 Wylde Ultralight Phosphate/Chrome-Lined Midlength Barrel Lightweight Durability and Precision for Versatile AR-15 Builds. The Criterion Barrels 14.5" .223 Wylde Ultralight Phosphate/Chrome-Lined Midlength Barrel is the ideal...

Criterion Barrels 16" .223 Wylde Core Phosphate/Chrome-Lined Midlength Barrel Our CORE Series barrels are designed with tactical shooters in mind. These barrels are built to address issues with weight distribution, balance, and handling of traditional...

Criterion Barrels 16" .223 Wylde HBAR Phosphate/Chrome-Lined Midlength Barrel Superior Rigidity and Heat Absorption for High-Performance Shooting. The Criterion Barrels 16" .223 Wylde HBAR Phosphate/Chrome-Lined Midlength Barrel is built for shooters who...

Criterion Barrels 16" .223 Wylde HBAR Stainless Midlength Barrel Superior Rigidity and Heat Absorption for High-Performance Shooting. The Criterion Barrels 16" .223 Wylde HBAR Stainless Midlength Barrel is designed for shooters who demand superior...

Criterion Barrels 16" .223 Wylde Hybrid Nitride Midlength Barrel Precision and Durability in a Lightweight Hybrid Design with a Nitride Finish. The Criterion Barrels 16" .223 Wylde Hybrid Nitride Midlength Barrel is designed for shooters who demand...

Criterion Barrels 16" .223 Wylde Hybrid Phosphate/Chrome-Lined Carbine Length Barrel Balanced Performance and Durability for Tactical, Competition, and Field Use. The Criterion Barrels 16" .223 Wylde Hybrid Phosphate/Chrome-Lined Carbine Length Barrel is...

Criterion Barrels 16" .223 Wylde Hybrid Phosphate/Chrome-Lined Midlength Barrel Unmatched Accuracy and Durability in a Balanced, Lightweight Design. The Criterion Barrels 16" .223 Wylde Hybrid Phosphate/Chrome-Lined Midlength Barrel is designed for...

Criterion Barrels 16" .223 Wylde Hybrid Phosphate/Chrome-Lined Rifle Length Barrel A Mid-Weight, Chrome-Lined Barrel Balancing Durability and Performance The Criterion 16" .223 Wylde Hybrid Phosphate/Chrome-Lined Barrel offers optimal durability and...

Criterion Barrels 16" .223 Wylde Pencil Phosphate/Chrome-Lined Midlength Barrel Extreme Weight Savings with Maximum Mobility and Durability. The Criterion Barrels 16" .223 Wylde Pencil Phosphate/Chrome-Lined Midlength Barrel is designed for shooters who...

Criterion Barrels 16" .223 Wylde Ultralight Phosphate/Chrome-Lined Midlength Barrel Lightweight Durability with Superior Accuracy for Versatile Shooting. The Criterion Barrels 16" .223 Wylde Ultralight Phosphate/Chrome-Lined Midlength Barrel is the...

Criterion Barrels 18" .223 Wylde Fluted Stainless Rifle Length Barrel Lightweight Precision with Fluted Design for Rigidity and Accuracy. The Criterion Barrels 18" .223 Wylde Fluted Stainless Rifle Length Barrel is designed for shooters who demand...

Criterion Barrels 18" .223 Wylde HBAR Phosphate/Chrome-Lined Rifle Length Barrel Superior Rigidity and Heat Absorption for High-Performance Shooting. The Criterion Barrels 18" .223 Wylde HBAR Phosphate/Chrome-Lined Rifle Length Barrel is designed for...

Criterion Barrels 18" .223 Wylde Hybrid Nitride Rifle Length Barrel Precision and Durability with a Lightweight Design for Superior Accuracy. The Criterion Barrels 18" .223 Wylde Hybrid Nitride Rifle Length Barrel is designed to offer extreme accuracy...

Criterion Barrels 18" .223 Wylde Hybrid Phosphate/Chrome-Lined Rifle Length Barrel Balanced Performance with Superior Durability for All-Day Use. The Criterion Barrels 18" .223 Wylde Hybrid Phosphate/Chrome-Lined Rifle Length Barrel is designed to offer...

Criterion Barrels 18" .223 Wylde Hybrid Stainless Rifle Length Barrel Precision Engineering for Superior Accuracy and Durability The Criterion Barrels 18" .223 Wylde Hybrid Stainless Barrel is crafted for shooters seeking an ideal balance between weight,...

Criterion Barrels 18" .223 Wylde Ultralight Phosphate/Chrome-Lined Rifle Length Barrel Lightweight Durability and Precision in an Ultralight Contour Barrel. The Criterion Barrels 18" .223 Wylde Ultralight Phosphate/Chrome-Lined Rifle Length Barrel is...

Criterion Barrels 18" 6.5 Grendel Hybrid Stainless Midlength Barrel Optimized Performance for Long-Range AR-15 Builds in 6.5 Grendel Introduction:The Criterion 18" 6.5 Grendel Hybrid Stainless Barrel is precision-engineered to take full advantage of the...