In 1976, Bo Laita launched AR-70/78 light machine guns, and the difference between the AR-70/74-78-type heavy barrel can quickly demolished to facilitate the replacement of combat conditions.

• 在1976年，伯莱塔公司推出AR-70/78轻机枪，与AR-70/74型的区别在于78型的重型枪管可以快速拆卸，便于作战条件下更换。