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| Best Seller  | Brownells Brn-4/Hk416 Compatible Piston Assembly - Brn-4 416 Compatible Piston Rod Assembly U.S. made gas piston assembly for the Heckler & Koch 416, 417, MR556, MR762, G28, G36 and SL8 firearms. High quality replacement or build component. Stainless steel piston, includes gas rings. Mfg: Brownells ... more
Brownells Brn-4/Hk416 Compatible Piston Assembly - Brn-4 416 Compatible Piston Rod Assembly U.S. made gas piston assembly for the Heckler & Koch 416, 417, MR556, MR762, G28, G36 and SL8 firearms. High quality replacement or build component. Stainless steel piston, includes gas rings. Mfg: Brownells | go to store |
 | Brownells Brn-4/Hk416 Compatible Gas Rings - Brn-4 416 Gas Ring 3 Pack U.S. made gas rings for the Heckler & Koch 416, 417, MR556, MR762, G28, G36 and SL8 firearms. Includes the 3 needed for a complete installation or replacement of worn out rings. Mfg: Brownells ... more
Brownells Brn-4/Hk416 Compatible Gas Rings - Brn-4 416 Gas Ring 3 Pack U.S. made gas rings for the Heckler & Koch 416, 417, MR556, MR762, G28, G36 and SL8 firearms. Includes the 3 needed for a complete installation or replacement of worn out rings. Mfg: Brownells | go to store |
| Best Seller  | Brownells Brn-4� Bolt Assembly - Brn-4/416 Bolt Assembly Replacement or spare Bolt Assembly for the Brownells BRN-4. Completely assembled with ejector and extractor. Black nitride finished exterior makes for an extremely hard and durable part. Compatible with HK416 and MR556 rifles. Nitride finish Complete... ... more
Brownells Brn-4� Bolt Assembly - Brn-4/416 Bolt Assembly Replacement or spare Bolt Assembly for the Brownells BRN-4. Completely assembled with ejector and extractor. Black nitride finished exterior makes for an extremely hard and durable part. Compatible with HK416 and MR556 rifles. Nitride finish Complete... | go to store |
 | Brownells Brn-4� Upper Receiver Assemblies With Chrome Lined Barrels - Brn-4 13.7" Chrome Lined Asse $130 off $1000+. Use code SEPT130Assembled from All New Components Now with Chrome Lined Barrels 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,... ... more
Brownells Brn-4� Upper Receiver Assemblies With Chrome Lined Barrels - Brn-4 13.7" Chrome Lined Asse Assembled from All New Components Now with Chrome Lined Barrels 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,... | go to store |
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