[quote=@Karos]
I'm only hesitant about that because why would someone carry a weapon that would be so hard to alter in a battle?

Additionally Laser Rifles can be found in abundance throughout the Wasteland as the games have indicated. I mean if you can acquire a Laser Rifle for 70 caps is it that ridiculous that my character would've acquired two and the resources to alter them?
[/quote]

I can see someone who's primarily a stealthy, infiltrator sniper primarily relying on his long-range laser rifle, and it could be passed that the rifle was heavily modded to allow for a very quick switch-between - of course, this isn't to say another rifle couldn't be picked up along the line.