What does gbbr stand for?
gbbr stands for "Gas Blow Back Rifles"
How to abbreviate "Gas Blow Back Rifles"?
"Gas Blow Back Rifles" can be abbreviated as gbbr
What is the meaning of gbbr abbreviation?
The meaning of gbbr abbreviation is "Gas Blow Back Rifles"
What does gbbr mean?
gbbr as abbreviation means "Gas Blow Back Rifles"
