Unlock these weapons by reaching the appropriate level in arcade mode.

Weapon	How to unlock
ABG1	Level 43
AR4A	Level 32
CAC82	Level 07
CPG7	Level 50
G50	Level 54
Guardian I	Level 60
Guardian II	Level 34
M209	Level 61
M45R	Level 19
M4E	Level 02
M94R	Level 30
MP10	Level 77
P44M	Level 05
P4512	Level 40
PM6	Level 26
SAW24	Level 15
SG112	Level 93
SPR11	Level 23
SPR3	Level 69
SR308	Level 85
TK1B	Level 46
TM9V	Level 11
TR14	Level 38
XM-2119	Level 01
XMW21	Level 99