What does MRR stand for?
MRR stands for "modular railed receiver"
How to abbreviate "modular railed receiver"?
"modular railed receiver" can be abbreviated as MRR
What is the meaning of MRR abbreviation?
The meaning of MRR abbreviation is "modular railed receiver"
What does MRR mean?
MRR as abbreviation means "modular railed receiver"
