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Before adding weight, consider this.
If the recoil is too much for the youngun', would adding weight make the firearm too heavy?
What caliber is it?
What affect would changing the balance of the firearm have?
Too much caliber can cause a new shooter to develop a flinch that is difficult to overcome. How much experience does he have with firearms?
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
Life Member NRA
Life Member NAHC
Former President of the ECPT (Eifel Combat Pistol Team)