HK 51000384 MR556 Upper Receiver Kit 5.56mm for AR15/M16/M4
$2,179.00
Add to Cart for Best Price
Ratings & Reviews
(based on 0 reviews)
Description
This kit includes a complete upper receiver/barrel assembly, allowing Mil-Spec 5.56mm AR-style rifles to be retrofitted to HKs piston and pusher rod system. This system utilizes a piston and a pusher rod in place of the gas tube normally found in AR15/M16/M4-style rifles. This closed system virtually eliminates the malfunctions that are common in direct-impingement gas systems, since hot carbon fouling and waste gasses are not propelled into the receiver area to operate the action. This is the same key feature critical to the success of the HK416 used by elite military and law enforcement customers. Upper will ship in HK Soft case.
Features
- Includes Bolt and Buffer
- M-Lok Handguard
Specifications
- Black
- MR556 A4 Upper Receiver
- Upper
- 16.5"
- 556NATO
- 223 Remington
- AR-15
- Anodized
- 223 Rem | 5.56 NATO
- 1-in-7"
- Black
Restrictions
This item may be restricted in the following areas: CA
This list may be incomplete, as we are constantly updating our database to reflect local, state, and federal laws.
Please research the laws in your area prior to purchasing. If you feel we have listed a restriction in error, please
contact us for further review.
