Hunting & Archery Equipment › brownells brn 4 upper receiver

Brownells Brn-4 Assembled Upper Receivers - Brn-4 10.4" Assembled Upper Receiver Medium Barrel

Assembled from All New Components Fits Standard AR-15 Lowers The BRN-4 Upper Receiver is now available as an Assembled Upper, with Barrel and Gas System installed. Simply add your preferred HK 416 compatible handguard and any 1/2-28 muzzle device, and... more

Brownells Brn-4 Assembled Upper Receivers - Brn-4 14.5" Assembled Upper Receiver Heavy Barrel

Assembled from All New Components Fits Standard AR-15 Lowers The BRN-4 Upper Receiver is now available as an Assembled Upper, with Barrel and Gas System installed. Simply add your preferred HK 416 compatible handguard and any 1/2-28 muzzle device, and... more

Fostech Lite Upper Complete Upper Receiver Black Nitride Bolt Carrier Group Patriot Brown 6204-PB

Fostech Lite Upper Complete Upper Receiver Black Nitride Bolt Carrier Group Patriot Brown 6204-PB. FosTecH Complete Lite Upper reciever Specifications for Fostech Lite Upper Complete Upper Receiver: Manufacturer: Fostech Condition: New Features of... more

Tiger Rock Complete Upper Receiver AR 9mm 4.5in Pistol Length 1-10 Twist Super Slim Keymod Handguard Black Nitride Finish Black Large UB9-P4.5-FSM04

Tiger Rock Complete Upper Receiver AR 9mm 4.5in Pistol Length 1-10 Twist Super Slim Keymod Handguard Black Nitride Finish Black Large UB9-P4.5-FSM04. 5in Pistol Length AR-9mm w/ 4in Super Slim Keymod Hanguard Complete Upper Receiver was developed to... more

CMMG Mk4 4.6X30mm Banshee Upper Group Receiver 8in Charcoal Green 46B965A-CG

CMMG Mk4 4.6X30mm Banshee Upper Group Receiver 8in Charcoal Green 46B965A-CG. 6x30mm firearm to the U.S. civilian market continuing a tradition of innovation shooters everywhere can now build a light recoiling flat shooting PDW (personal defense... more

NO-M.A.R® Cleaning Link Gunsmith 4/15 Armorers Tool for Rear pin

Product Description This high quality armorers tool is made from durable NO-M.A.R polymer to protect the finish of your upper receiver. Simply insert this link between your upper and lower receiver and secure it with your rear pin and the provided... more

NO-M.A.R® Cleaning Link Gunsmith 4/15 Armorers Tool for Rear pin

Product Description This high quality armorers tool is made from durable NO-M.A.R polymer to protect the finish of your upper receiver. Simply insert this link between your upper and lower receiver and secure it with your rear pin and the provided... more

Brownells Brn-4 Assembled Upper Receivers - Brn-4 16" Assembled Upper Receiver Medium Barrel

Assembled from All New Components Fits Standard AR-15 Lowers The BRN-4 Upper Receiver is now available as an Assembled Upper, with Barrel and Gas System installed. Simply add your preferred HK 416 compatible handguard and any 1/2-28 muzzle device, and... more

Brownells Brn-4 Assembled Upper Receivers - Brn-4 14.5" Assembled Upper Receiver Medium Barrel

Assembled from All New Components Fits Standard AR-15 Lowers The BRN-4 Upper Receiver is now available as an Assembled Upper, with Barrel and Gas System installed. Simply add your preferred HK 416 compatible handguard and any 1/2-28 muzzle device, and... more

Brownells Brn-4 Assembled Upper Receivers - Brn-4 16" Assembled Upper Receiver Heavy Barrel

Assembled from All New Components Fits Standard AR-15 Lowers The BRN-4 Upper Receiver is now available as an Assembled Upper, with Barrel and Gas System installed. Simply add your preferred HK 416 compatible handguard and any 1/2-28 muzzle device, and... more

Brownells Upper Receiver Bushing For Hk416 & Mr556 - Brn-4 Upper Receiver Op Rod Bushing For Hk416 &

U.S. made aftermarket replacement upper receiver op rod bushing for the Heckler & Koch 416 or MR556 Rifles. Mfg: Brownells more

Brownells Brn-4 Stripped Upper Receiver Billet

Assemble your own BRN-4 Upper Receiver Assembly Machined from billet aluminum the new BRN-4 Stripped Upper Receiver mates perfectly with the Brownells BRN-4 barrels, gas system components and bolt carrier group. Assemble a BRN-4 Upper Receiver Group... more

Brownells Brn-4 416/Mr556 Complete Bolt Carrier Group - Brn-4 416 Type Complete Bcg Nitride

BRN-4 Complete Bolt Carrier Group for 416 Type Firearms This Completely assembled BRN-4 Bolt Carrier Group is ready to drop into HK 416, MR556 or other compatible upper receivers & firearms. Utilizing high quality materials, finishes and inspection... more

Brownells Ar-15/M16 Armorer's Small Parts Kit - Ar-15 Armorer's Small Parts Kit

Designed for the armorer or gunsmith who services a lot of ARs! This extensive kit includes the key small components for both the upper and lower receiver to keep your customers', department's, or agency's AR-15s ready for action. Also great for doing... more

Volquartsen Llv Competition Upper Receiver 4.5" Ts Black

A hard anodized CNC-machined billet receiver is the foundation of this lightweight setup. The complete barreled receiver weighs under 16oz! The receiver and barrel shroud are precision-machined as one piece from aluminum alloy. An integral Picatinny... more

Brownells Ar-15 Armorer's Wrench

Brownells new AR-15 Armorer's Wrench works with either encapsulated or peg-style barrel nuts. The long handle ends with a carbine buttstock wrench that features four teeth that ensure full engagement of all four notches in an M4-style receiver... more

Brownells Ar-15/M16 Barrel Extension Torque Tools - Ar-15/M16 Barrel Extension Torque Tool

Handy tool aids in applying straight-line torque for fast, easy installation of the barrel nut without scratching the exterior of the upper receiver. Helps ensure the right amount of torque is evenly applied, while maintaining proper alignment of the... more

Brownells Car-15/M4 Buttstock Wrench - M4 Buttstock Wrench

Dedicated wrench has four precision-machined teeth that ensure full, non-slip engagement of all four notches in an M4-type receiver extension nut for easy removal and installation of collapsible carbine buttstocks. Transfers all the torquing force to... more

Brownells Unplated Steel Flat Head Wood Screw Kit - 2x1/4" Steel Flat Head Wood Screws Blued 12 Pack

Just the ticket when you need to brown or blue a wood screw - no plating to grind off. In a handy, clear, bench box. U.S. made with 82° shoulder to fit standard countersinks. Mfg: Brownells SPECS: Kit Contains 12 Each Of Following Sizes: 2x�"; 2x3/8";... more

Brownells Ar-15 Replacement Brush - Ar-15 Replacement Receiver Brush

Make short work of cleaning heavily fouled AR-15 upper receivers, right down to the locking lug recess. Specially sized and shaped bronze receiver brush quickly looses stubborn carbon residue from the bolt carrier way and locking lug recess. Mfg:... more

Brownells Ar-15 Replacement Bore Mops - Ar-15 Replacement Cotton Mop

Make short work of cleaning heavily fouled AR-15 upper receivers, right down to the locking lug recess. Wool mop quickly loosen stubborn carbon residue from the bolt carrier way and locking lug recess. Mfg: Brownells more

Brownells Baking Lacquer Liquid - 16 Oz. Coyote Brown Baking Lacquer

Many guns and parts out there can't be finished with the old standard finishes like hot salts bluing, rust bluing or nickel plating. Including, those late Winchester 94s; engraved, or gray finished receivers; or low-dollar guns whose owners don't want... more

Brownells Ar-15 Replacement Bore Mops - Ar-15 Replacement Wool Mop

Make short work of cleaning heavily fouled AR-15 upper receivers, right down to the locking lug recess. Wool mop quickly loosen stubborn carbon residue from the bolt carrier way and locking lug recess. Mfg: Brownells more

Kaw Valley Precision M-Lok 9mm Complete Upper Receiver 4.5mm M-LOK Handguard Black Medium KVP-MLOK-9UP-4LC

Kaw Valley Precision M-Lok 9mm Complete Upper Receiver 4.5mm M-LOK Handguard Black Medium KVP-MLOK-9UP-4LC. After assembly each upper is test fired to prove its function before leaving our warehouse Specifications for Kaw Valley Precision M-Lok 9mm... more

CMMG Mk4 Banshee Upper Receiver Group 4.6x30 H&K 8in Armor Black 46B965A-AB

CMMG Mk4 Banshee Upper Receiver Group 4.6x30 H&K 8in Armor Black 46B965A-AB. . These AR15 Upper Receivers through the expert product professionals at CMMG are made working with dependable and efficient components in order to provide you with product... more

CMMG Mk4 4.6X30mm Banshee Upper Group Receiver 8in Sniper Grey 46B965A-SG

CMMG Mk4 4.6X30mm Banshee Upper Group Receiver 8in Sniper Grey 46B965A-SG. 6x30mm firearm to the U.S. civilian market continuing a tradition of innovation shooters everywhere can now build a light recoiling flat shooting PDW (personal defense weapon)... more

CMMG Mk4 4.6X30mm Banshee Upper Group Receiver 8in Titanium 46B965A-TI

CMMG Mk4 4.6X30mm Banshee Upper Group Receiver 8in Titanium 46B965A-TI. 6x30mm firearm to the U.S. civilian market continuing a tradition of innovation shooters everywhere can now build a light recoiling flat shooting PDW (personal defense weapon) like... more

CMMG Mk4 4.6X30mm Banshee Upper Group Receiver 8in Midnight Bronze 46B965A-MB

CMMG Mk4 4.6X30mm Banshee Upper Group Receiver 8in Midnight Bronze 46B965A-MB. 6x30mm firearm to the U.S. civilian market continuing a tradition of innovation shooters everywhere can now build a light recoiling flat shooting PDW (personal defense... more

FM Products MIKE-9 9mm Complete Upper Receiver 23.75 inch 16 inch Barrel MIL-SPEC Rear Charge 1-10 Twist 1/2x36 Thread Free-Float Nitride Black

FM Products MIKE-9 9mm Complete Upper Receiver 23.75 inch 16 inch Barrel MIL-SPEC Rear Charge 1-10 Twist 1/2x36 Thread Free-Float Nitride Black. . These AR15 Upper Receivers through the professional product experts at FM Products are designed by using... more

FM Products MIKE-9 9mm Complete Upper Receiver 23.75 inch 16 inch Barrel Front Charge 1-10 Twist 1/2x36 Thread Free-Float Nitride Black MIKE9U-F1615-4

FM Products MIKE-9 9mm Complete Upper Receiver 23.75 inch 16 inch Barrel Front Charge 1-10 Twist 1/2x36 Thread Free-Float Nitride Black MIKE9U-F1615-4. . These AR15 Upper Receivers through the professional product experts at FM Products are designed by... more

FM Products MIKE-45 .45 ACP Complete Upper Receiver Kit 16 inch Barrel Mil-Spec Rear Charge Black MIKE45U-R1615-4-MMKIT

FM Products MIKE-45 .45 ACP Complete Upper Receiver Kit 16 inch Barrel Mil-Spec Rear Charge Black MIKE45U-R1615-4-MMKIT. 45 ACP Complete Upper Receiver Kit was made to be the ideal item for any person looking for an outstanding choice.. Established... more

Fostech Lite Upper Complete Upper Receiver Nickel Boron Bolt Carrier Group Patriot Brown 6205-PB

Fostech Lite Upper Complete Upper Receiver Nickel Boron Bolt Carrier Group Patriot Brown 6205-PB. FosTecH Complete Lite Upper reciever Specifications for Fostech Lite Upper Complete Upper Receiver: Manufacturer: Fostech Condition: New Features of... more

CMMG Mk4 .22LR Banshee Upper Group Receiver 4.5in Sniper Grey 22B5BD4-SG

CMMG Mk4 .22LR Banshee Upper Group Receiver 4.5in Sniper Grey 22B5BD4-SG. 22 LR that looks like an AR build an AR that happens to be chambered in .22 LR. Equipped with a 4.5 barrel the shortest CMMG offers in any caliber this BANSHEE upper group is... more

CMMG Mk4 .22LR Banshee Upper Group Receiver 4.5in Coyote Tan 22B5BD4-CT

CMMG Mk4 .22LR Banshee Upper Group Receiver 4.5in Coyote Tan 22B5BD4-CT. 22 LR that looks like an AR build an AR that happens to be chambered in .22 LR. Equipped with a 4.5 barrel the shortest CMMG offers in any caliber this BANSHEE upper group is... more

CMMG Mk4 .22LR Banshee Upper Group Receiver 4.5in Titanium 22B5BD4-TI

CMMG Mk4 .22LR Banshee Upper Group Receiver 4.5in Titanium 22B5BD4-TI. 22 LR that looks like an AR build an AR that happens to be chambered in .22 LR. Equipped with a 4.5 barrel the shortest CMMG offers in any caliber this BANSHEE upper group is built... more

CMMG Mk4 .22LR Banshee Upper Group Receiver 4.5in Midnight Bronze 22B5BD4-MB

CMMG Mk4 .22LR Banshee Upper Group Receiver 4.5in Midnight Bronze 22B5BD4-MB. 22 LR that looks like an AR build an AR that happens to be chambered in .22 LR. Equipped with a 4.5 barrel the shortest CMMG offers in any caliber this BANSHEE upper group is... more

CMMG Mk4 .22LR Banshee Upper Group Receiver 4.5in Charcoal Green 22B5BD4-CG

CMMG Mk4 .22LR Banshee Upper Group Receiver 4.5in Charcoal Green 22B5BD4-CG. 22 LR that looks like an AR build an AR that happens to be chambered in .22 LR. Equipped with a 4.5 barrel the shortest CMMG offers in any caliber this BANSHEE upper group is... more

CMMG Mk4 .22LR Banshee Upper Group Receiver 4.5in Tungsten 22B5BD4-TNG

CMMG Mk4 .22LR Banshee Upper Group Receiver 4.5in Tungsten 22B5BD4-TNG. 22 LR that looks like an AR build an AR that happens to be chambered in .22 LR. Equipped with a 4.5 barrel the shortest CMMG offers in any caliber this BANSHEE upper group is built... more