Check inventory at other vendors:
- $1,999.00 Bereli
- $1,999.99 Eurooptic
- $2,179.00 The Modern Sportsman
- More...
Description
The MR556 upper receiver kit has been updated to include all the new A4 features, including new barrel profile, adjustable gas block, handguard and more. This kit includes a complete upper receiver/barrel assembly, allowing Mil-Spec 5.56mm AR-style rifles to be retrofitted to HK's 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. The MR556 A4 is assembled in the USA using US and German-made components and uses many of the same parts and assemblies originally developed for the HK416. It functions reliably and shoots accurately with a wide variety of quality 5.56mm or .223 ammunition. Due to the shortened length of the HK buffer and action spring, these parts do not work in fixed-stock AR/M16- type rifles. Installation of Mil-Spec hammers on non-HK lower receivers is required for reliable function.
Features:
Suppressor-ready Concentric 1/2X28 Threads
Adjustable Gas Regulator for Shooting Suppressed and Unsuppressed
M-LOK Interface with Integral Ambi QD Cups
Continuous Picatinny Rail Interface Between Upper Receiver and Handguard
Extended, Ambidextrous
Charging Handle with Dual Claws
Match Rifle Cold Hammer-forged Barrel
Item : S1_178701
Browse more Heckler & Koch Uppers for sale gun parts.Live Inventory Search
Compare prices for 642230270220 - HK Upper Receiver Kit MR556A4 11" 51000385 from all vendors
| Store | Price | Shipping rate | Report | Show more |
|---|---|---|---|---|
|
$1,999.00
|
Free | |||
|
$1,999.99
|
FREE Shipping over $250, Firearms $13.95 flat rate S/H | |||
|
$2,179.00
|
$0-$10 | |||
|
Add to Cart for best price
|
$14.95 | |||
|
$2,179.00
|
no info | |||
|
Out Of Stock
|
||||
|
Add to Cart for best price
|
Calculated in Cart | |||
|
Add to Cart for best price
|
$24.99 | |||
|
MAP
|
Most Firearms ship for FREE | |||
|
$1,977.99
|
14.31 | |||
|
Add to Cart for best price
|
Free Shipping On Select Items - Free shipping on most guns! | |||
|
Add to Cart for best price
|
19.99 | |||
|
$2,179.00
|
Free Shipping | |||
|
$2,179.00
|
Calculated in Cart | |||
|
Add to Cart for best price
|
$9.99 | |||
|
Add to Cart for best price
|
Free Shipping Over $200 | |||
|
MAP
|
Low Shipping | |||
|
$2,179.00
|
$8 Flat Rate Shipping | Free Shipping over $200 | Free Shipping on ALL Firearms and Suppressors! | |||
|
Add to Cart for best price
|
See price at checkout | |||
|
$2,238.75
|
19.99 | |||
|
Add to Cart for best price
|
$19.99 | |||
|
$2,481.99
|
Firearms & Suppressors $19.99 | Accessories $14.95 - $19.99 | |||
|
Add to Cart for best price
|
45.00 |
