Settling in and watching Enterprise, S1E3 kind of tickles my nature.
Getting ready to board an obviously damaged, unresponsive vessel: Lt. Reed is inclined to break out the heavy rifles, and Capt. Archer surmises that the phrase pistols are sufficient. Considering the unknown situation aboard the other ship: it would make more sense to have Reed with a rifle, and keep the pistols for the rest: light enough to be non threatening if they encounter survivors, and more punch in case things go sour.
Issuing hand phasers and tricoders to away teams as a precaution is probably one of Star Fleet’s saner SOPs, given the wide range of situations Star Fleet personnel are exposed to. But heavy weapons are actually a pretty rare sight in Star Trek despite the amount of shooting that goes on. I don’t really think there were enough times rifles appeared in TOS to remember the 23rd century phaser rifle more than superficially. In the 24th century, it was largely due to the Borg threat and Dominion war that we really see the Type-IIIs. Actually, it’s kind of comforting that the next iteration made it into Voyager’s armories, lol. Not sure if any real figures were ever given for easier weapons, but the Federation Type-IIs popular in the 24th century probably had more destructive potential than anyone could hope to leverage at the longer distances found planet side.
By contrast the MACO unit attached to Enterprise after the Xindi incident is very abnormal by Star Trek norms. But I suppose even the precursors of the Federation eventually had to go down that route.