From RB
From Golden Age PG
that means the attack has to dealt at least 3 damage, and making a attack roll is optional, and we have this . . .


that say if i use DBT rules and make an attack roll, im dealing 3 damage with longshot´s LMA trait

Actually it says you may not choose to make an attack. Therefore it is not an option.

Critical Hits
A critical hit increases the damage dealt to any character hit by
an attack that deals damage.

-You may not choose to make an attack roll when using the rules
for destroying terrain

Can a wall or square of blocking be crit hit?

I'm a little confused. Why are we using the GA PG? Also I'm not quite sure what your question is. Are you upset you don't get the extra damage from LMA?

I use GA PG because is newest and more complete that the Modern Age PG. until the MA PG of this years coming out.

Only re-open a thread, because you can destroy a blocking terrain with a character that has BCF and has less that 3 damage if you roll 3 or more with BCF, but not with a Critical Hit??? that is no sense, and is not a question is a Discussion as labeled on the top

Ignore whether or not a Player's Guide is "modern" or "golden". The age is not relevant. Only look for the Player's Guide with the newest publication date and read that one alone. That means the Modern Age Player's Guide is no longer a valid source for any rules. Use the Golden Age Player's Guide instead.

?????? GA came out after modern???????

As far as I know there is no more Modern Age Player's Guide as they've decided to change the Player's Guide format. The reason for the change was that the Modern age one was pretty redundant. The only difference between the two were that the Golden Age variant also contained the Golden Age stuff.