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Mfg Item #: 51000384
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.
| Width | 13.8000 |
|---|---|
| Height | 4.5000 |
| Length | 43.9500 |
| Caliber | 223 REM/5.56 NATO |
| Dimension | 4.50 X 13.80 X 43.95 |
| Barrel Finish | STAINLESS |
| Rate Of Twist | N/A |
| Other Features | FORWARD ASSIST EXTENDED CHARGING HANDLE FREE FLOATING HANDGUARD COMPLETE BOLT GROUP ASSEMBLY HK BUFFER AND ACTION SPRING |
| Barrel Material | STEEL |
| Other Features2 | SUPRESSOR READY 1/2 X 28 M-LOCK WITH INTEGRAL AMBI QD CUPS PICATINNY RAIL |
| Barrel Length In Inches | 16.5 |