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Bar1975 · August 2nd, 2015, 13:25

i have an RPK and want to replace the hop up bucking. Currently running a Madbull BLUE but it's gotten rather soft over the last season from a sustained rate of fire.

What's a good solid bucking that will hold up to long sustained fire in around the 350FPS range..

I've tried the Prommy RED (harder rubber) before but was getting mis-feeds and jams..

August 2nd, 2015, 13:25	#1
Bar1975 Trader rating Join Date: Aug 2012 Location: ON	best rubber bucking for sustained fire i have an RPK and want to replace the hop up bucking. Currently running a Madbull BLUE but it's gotten rather soft over the last season from a sustained rate of fire. What's a good solid bucking that will hold up to long sustained fire in around the 350FPS range.. I've tried the Prommy RED (harder rubber) before but was getting mis-feeds and jams..