When I'm at the club range I always let other shooters try out my guns.
I always take a few extra guns along & lay them out like I'm letting them cool for the curious eyes.
At public ranges I'm very cautious letting others fire my guns but I do let other shooters use my guns if I see they are using safe gun handling practices.
I had one guy at a public range spouting off to his buddy's how worthless my AKs were because they were inaccurate. He was shooting a benchrest .22 at the 50yd range, I could see his target through my scope and was watching how bad of a group he was getting.
So after his buddy's packed up & left he was still trying to work out his problem I ask him if I could use one of his targets to check the scope on one of my AKs. He said yes, so I pulled out one of my AK74s and poped off 5 rounds.
Then I just sat there looking at the gun like there was something wrong with it, he looked through his scope & said "Huh looks like you only hit with one shot". I said no you had better look at the target again.
He looked at the target through his scope & told my he needed to go down range. I told him OK I needed to go too. We walked out to the targets & I was looking at my shot up targets from the AK47s I was using first.
I turned around & he had the target in his hand looking at it, so I took a look then said Humm, looks like I did hit with all five rounds. The target had five little radius's making a hole about the size of a ,30cal round it was just a little high from center so I told him Yea, I know the scope is a little off.
Then I asked him if he would like to give it a try, after he tried it he said he had to have one of them because it was a lot more accurate than he ever thought it would be. And I told him the ammo was dirt cheap too.