No because a gun cannot be changed by a normal sibling or adult
You can customize all the guns except the ones you pick up on missions.
You need a gunsmith
On battlefield three you can change about anything you want on your guns
I own this app on my iPod and unfortunately you can not customise your own guns
No
You don't.
Yes you can modify your computer but that will require very high level of skill to modify your operating system. If you are using Linux then it is easier to modify the way your computer runs.
They work on, repair and modify guns and rifles
If the owner of the guns is dead, you can not get them from the police not being the owner.
Personalize is to design something with your personality and costumize is to modify something in the way you prefer
Open the Create Statements window, select your template and choose "customize".
A synonym for modify can be transmogrify, reform, or customize. Also alter, make over, recast, redo, refashion, remake, remodel, revamp, revise, rework, or vary.