I have bro guns but they are Glocks for my wife's cop friends a few Berettas for my Army friends, and a Spikes M4 type carbine with a compM2, Armalite M4 type Carbine with carry handle, and a PSA middy with a carry handle. Last two are for the kids but they are loaners for now. I have a Centurion Arms mk12 and two LWRCi carbines but the glass is more than the carbines before these.
It really depends on the person. I have a M1 and a M1 carbine and the M1 carbine is for my mom because she learned how to shot on it. It was my granddad's.