flechette

flechette

1. The ACR "rifles" used smoothbore barrels to fire single or multiple flechette per round, rather than bullets, to provide long range, flat trajectory, and armor piercing abilities.

炮弹（抛射物）必须拥有稳定的外形，比如带尾翼的箭状物或球体，以此减小发射时的震动。

2. serial flechette rifle

箭弹枪

3. The Steyr ACR used new flechette ammunition that was nominally called 5.56 mm, with a very high 4750 ft/s (1450 m/s) muzzle velocity.

而施泰尔ACR使用了新的镖弹，通常被称为5.56毫米弹药，但是具有极高的4750码/每秒（1450米/每秒）的枪口速度。