Besides, a guy with a rifle is less likely to attract the attention of a sniper.
That was my Dad's philosophy in the Essex Scottish and No. 4 Commando in 1943. As a Lieurenant (acting Major and company commander with the Essex Scottish) he declined a Thompson Machine Carbine and carried a Lee Enfield rifle, and pistol (and in No. 4 Cdo, an F-S Fighting knife).
On one exercise in the very early 1970s, my Sgt and I each took our personal Lee Enfield No. 4 Mk. I(T) rifles out. He went off solo to act as enemy. As I led my platoon I heard a single shot. I then used my scope to zero in on the moving Sgt on a skyline and fired. Afterwards, I claimed a victory. Sgt. Bob Adams smiled, and simply said "Who do you think I shot with that first shot?"