The MR556 A4 short-stroke gas piston operating system does not impart hot carbon fouling back into the action, allowing the weapon to run longer, with less maintenance and with less wear on internal components. Its adjustable gas regulator allows the operator to tune the action specifically for suppressed or unsuppressed operation. Fully ambidextrous controls, lighter weight and a slimmer profile make the new A4 easier to operate, manipulate and employ.
| Capacity: |
10+1 |
| Twist: |
1:7" |
| Barrel Finish: |
Black |
| Series: |
A4 |
| Sights: |
None |
| Thread Pattern: |
5/8"x24 |
| Stock Description: |
6 Position |
| Barrel Material: |
Steel |
| Model: |
MR556 |
| Grooves: |
6 |
| Weight Range: |
6 lbs to 6.99 lbs |
| Stock Material: |
Synthetic |
| Caliber: |
5.56x45mm |
| Operating System: |
Gas Piston |
| Width: |
3.07" |
| Action: |
Semi-Auto |
| OAL: |
26.50" |
| Stock Finish: |
Black |
| Handguards: |
M-LOK |
| Max Capacity: |
10 |
| Hand: |
Ambidextrous |
| Height: |
7.50" |
| Grips: |
Black Polymer |
| Trigger Pull Weight: |
4.50-5.60 lbs |
| Barrel Description: |
Threaded |
| Barrel Length: |
11" |
| Receiver Description: |
Picatinny Rail |
| Receiver Finish: |
Black |
| Safety: |
Ambidextrous Safety Lever |
| Search Code: |
HK |
| Barrel Length Range: |
11" to 11.99" |
| Weight: |
6.61 lbs |
$3,749.00
