Its shorter barrel prevents a grenade launcher or bayonet from being attached, and it has an AKS-74U style muzzle booster. The carbine may also be in use with special forces. The carbine lacks a forend and instead has a foregrip, with the front iron sight built into the carrying handle. The squad automatic weapon variant of the QBZ-95. It has an added bipod, a longer, heavier barrel and 80-round drum magazine to allow sustained fire, however, the standard 30-round box magazine is also compatible. Although the QBB-95 and QBZ-95 both take the standard 5.8×42mm DBP87 round, the QBB-95 typically uses the 5.8x42mm DBP88 "heavy round" squad automatic weapon and designated marksman rifle cartridges, which have longer, deeper armour penetration and better ballistics at long range. As using the heavy rounds on a QBZ-95 would greatly wear the barrel in action, normal cartridges are used on QBZ-95 rifles. However, with the fielding of the QBZ-95-1 variant, newer and heavier DBP10 cartridges will become the standard ammunition for both weapons. The QBZ-97 is an export version similar to the QBZ-95 in all respects except that it is chambered for 5.56×45mm NATO ammunition instead of the original Chinese 5.8 mm cartridge and has a deep magazine well designed to accept STANAG magazines. This rifle is currently used by Ginghis Security Academy, a Chinese private security group, supplementing their QBZ-95's. This variant is a QBZ-97 with the addition of a 3-round burst mode and a bolt hold-open device; it also differs from the QBZ-95 and the QBZ-97 for the shape of its grip, now missing the "front grip" part in front of the trigger guard. This weapon is the only QBZ-95 variant to have seen commercial success and military use outside of China. QBZ-97A rifles are in use by 911 Special Forces of Cambodia Special Operations personnel. This is the carbine version of the QBZ-97. The official distributor of the QBZ-97B assault carbine on the international market, "Jianshe Industries (Group) Corporation", advertises and sells it under the denomination "5.56mm Short Automatic Rifle Type NQZ03B (97)". The light support weapon model of the QBZ-97 is chambered for 5.56×45mm NATO ammunition instead of the original Chinese 5.8 mm cartridge.