[PAR] [TLE] Heckler &amp; Koch HK416 [SEP] The Heckler & Koch HK416 is an assault rifle/carbine designed and manufactured by Heckler & Koch.  Although its design is in large part based on the AR-15 class of weapons, specifically the Colt M4 carbine family issued to the U.S. military, it uses an HK-proprietary short-stroke gas piston system originally derived from the ArmaLite AR-18 (the same system was also used in Heckler & Koch's earlier G36 family of rifles).  The HK416 gained fame as the weapon that United States Navy SEALs from DEVGRU Red Squadron used to kill Osama Bin Laden in 2011. [PAR] [TLE] M4 carbine [SEP] The M4 carbine is a shorter and lighter variant of the M16A2 assault rifle.  The M4 is a 5.56×45mm NATO, air-cooled, direct impingement gas-operated, magazine-fed carbine.  It has a 14.5 in barrel and a telescoping stock.
[PAR] [TLE] Heckler & amp ; Koch HK416 [ SEP ] The Heckler & Koch HK416 is an assault rifle / carbine designed and manufactured by Heckler & Koch . Although its design is in large part based on the AR-15 class of weapons , specifically the Colt M4 carbine family issued to the U.S. military , it uses an HK - proprietary short - stroke gas piston system originally derived from the ArmaLite AR-18 ( the same system was also used in Heckler & Koch 's earlier G36 family of rifles ) . The HK416 gained fame as the weapon that United States Navy SEALs from DEVGRU Red Squadron used to kill Osama Bin Laden in 2011 . [PAR] [TLE] M4 carbine [ SEP ] The M4 carbine is a shorter and lighter variant of the M16A2 assault rifle . The M4 is a 5.56×45 mm NATO , air - cooled , direct impingement gas - operated , magazine - fed carbine . It has a 14.5 in barrel and a telescoping stock .
Heckler & Koch HK416 is a rifle largely based on what variant of the M16A2?
Heckler & Koch HK416 is a rifle largely based on what variant of the M16A2 ?
M4 carbine
M4 carbine