Get a better seal for your tip and a faster plunger return. More fps and RPS. Essential for higher RPS.
We have done all the hard work and spent a lot of money in research for you and these parts that I am now selling are the best and will be the right type of upgrade that will give you the best benefits.
YOU ARE BUYING BEAST UPGRADE:
# 1 X Singularity Strong Return Spring GEL GUN BLASTER M4A1 AK47 UMP45 SCAR (FIT MOST BLASTERS)