Power Control Recoil Weight For KSC/ KWA ERG RM4(Toy only)
 
Recoil weight unit for KWA ERG M4 with adjustable projectile speed - upgraded version
 
Full set of special springs for ERG (Electronic Recoil Gun) M4 series for adjusting projectile velocity M90 ~ M110 & M110 ~ M120 using a 14mm spanner.
(300~350fps & 390~420fps, based on inner barrel 294mm, bullet speed may change depending on internal conditions.)
Changed two front springs to widen the control range of projectile velocity.
It protects you from damage and allows you to adjust the speed of your bullets.
If the rear spring is removed, it can be used as a normal AEG without recoil.

• EAN and SKU: 8809899600030, SKU: BU20-KRW
• Product size and weight: 8.66(L)x0.90(W)x0.90(H) inches 15oz
• Package weight and size: 11.8(L)x 3.3(W) x 1(H), 15oz
• Made in Korea,