The RM4 CQB main spring fits the KWA RM4 ERG Series and is rated to shoot at 330-350 FPS. With the new RM4A1 quick-change spring system, a spare spring to quickly switch to indoor play is a must have.
$15.00
In stock
The RM4 CQB main spring fits the KWA RM4 ERG Series and is rated to shoot at 330-350 FPS. With the new RM4A1 quick-change spring system, a spare spring to quickly switch to indoor play is a must have.
Weight | .03 lbs |
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Dimensions | 6 × .5 × .5 in |