The HK53 is a carbine made by German firearms manufacturer Heckler & Koch. It is a variant of the HK33 assault rifle, and operates on the same principal as the G3, but it is chambered in the 5.56x45mm NATO round and is fed from thirty- or forty-round box magazines.
— In-game description
The HK53A3 is a weapon featured in Battlefield 2: Euro Force and is the standard carbine issued to the EU Special Forces kit. It comes with a 40-round magazine, and can be fired either full-auto or in three-round-burst. Its spread values are on the moderate side of the carbines, while its recoil values are on the higher end; it has above-average damage and a moderate reload speed, while its rate of fire is average. Its most notable feature is its forty-round magazine, whereas all other carbines have a thirty-round magazine.
— Battlefield Play4Free Announcement
The G53 is a weapon featured in Battlefield Play4Free and is unlocked at rank 27. It can then be purchased 499 for a days use or 2,999 to own it permantly.
By default, it features a 29-round magazine and carries the most ammunition out of all the primary Engineer weapons. It also boasts an above average reload speed, high bullet velocity, high accuracy, and fairly high damage margins over all ranges for its class. Aesthetically, the G53 has a rugged, war-torn appearance and resembles the Assault's default weapon, the G3A4.
— Battlelog description
It features full-automatic, three-round-burst, and semi-automatic firemodes, as well as a moderate rate of fire. Its damage is in-line with most of the other carbines, at 25 - 14.3, as is its magazine capacity, at 30+1 rounds per magazine. It has moderate reload times, but low overall recoil. This means it can reach out to medium distances, making it a versatile weapon. However, the player will struggle at long ranges, so it is advised not to use it at said ranges.
- The G53 in Battlefield 3 was called HK53 on the PlayStation 3 version until a patch changed the designation to G53, like the PC and Xbox 360 versions.
- In Scavenger, the G53 can be found with both a suppressor and a laser sight; this combination is not normally obtainable, as both share the same attachment slot.
- With Battlefield Premium, the Navy Blue Digital Camouflage and the Woodland Stripe Camouflage can be unlocked for the G53 by completing the G53 Specialist assignment.