We price match | Free shipping on orders $100 or more

BT BT-4 5 Piece Spring Kit




Includes 5 different main/velocity springs, two harder than stock, 1 stock, and 2 softer than stock Compatible with all BT4 based guns (delta, ironhorse, swat, combat, assault, etc)

Blue Spring - Ultra Light
Green Spring - Light
Black Spring - Stock
Silver Spring - Medium
Red Spring - Hard

Customers Also Bought