LCT LK-53A3 AEG - BlackAlthough probably not as widely known as its 9mm and 7. 62mm siblings, the real HK53 is a 5. 56 variant of the HK roller delayed blowback family of rifles. All the controls and features of the other HK guns in a 5. 56 package, allowing both you and your pouches to be easily acquainted to running this gun. This compact variant in fact is so short, its basically a MP5 in "Large" size! LCT has very faithfully recreated the rifle, featuring a fully