M13B

Optic

AIM OP-V4

0.11

-3

Barrel

14" Bruen Echelon

0.4

0.5

Muzzle

Harbinger D20

1

1.4

Underbarrel

FTAC Ripper 56

0.4

0.8

Magazine

60 Round Mag

The M13B features a short-stroke piston system that allows for a high rate of fire and low recoil.

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