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|Magazine size|| 8 (Standard Mag)|
12 (Extended Mag)
|Supported attachments|| Red Dot Sight|
“This whisper-quiet crossbow, an over-under semi-auto weapon, requires accuracy to compensate for its low damage when assassinating targets.”
— Auto Crossbow description
The Auto Crossbow, also known as Auto-Cross, is a special weapon appearing in Far Cry 4. The weapon is unlocked after completing the City of Pain mission, after which it can be purchased for ₭105,000 or Longinus gives it for free after liberating all 17 Bell Towers, together with the Buzzsaw. It can also be found in the prison mine in the mission Don't Look Down, in one of the two weapons caches before arriving at the bell tower.
The Auto-Cross is primarily a short-ranged weapon capable of being fired rapidly. It uses its own type of unique ammunition, Bolts, which have a much flatter trajectory and higher velocity than Arrows. This flatter trajectory, along with the attachment of an optical sight allows the player to "snipe" enemies at much longer ranges, and more easily, than the two bows (the Hunter Bow and the Recurve Bow). It is also classified as a sidearm, so it can be used while on a vehicle.
The Auto-Cross is excellent for stealth kills. It is also powerful, despite its description stating otherwise, capable of killing enemies in one shot to the chest or head, although it requires 2 shot to torso later into the game. However, by the time it can be unlocked, a significant amount of enemies are armored and, as with all weapons, require a headshot to kill outright; to remedy this, a quick double-tap with the Auto-Cross is able to dispatch most armored enemies with bodyshots alone, even on the hardest difficulty.
When used as part of a careful and well-planned stealth assault, the Auto-Cross can be extremely effective, being even more versatile and with a much higher damage output than the bows, with its only disadvantage over the bows being its inability to use incendiary or explosive bolts.
- When fighting the Royal Army in the south, this weapon can easily dispatch them, as it will kill them with one shot to any part of the body. With the Royal Guard in the north however, it will take two shots to the torso or one shot to the head.
- The Auto-Cross' design is based on the PP-Bizon, seen due to its evident "helical" magazine (which fails to explain how it is compatible with the crossbow mechanism) but lacking a stock so it can classify as a sidearm. This suggests that the weapon may have been homemade from a broken BZ19 by a talented gunsmith.