Minor modification on closed bolts, but could use documentation
Review:
I'm extremely impressed with such an inexpensive mod to my setup. I was skeptical because of the price, but I figured at $15, I couldn't go wrong. After installing the bolt, I was able to dial my pressure down to around 300 psi...about 100 psi less than I could get with the Red Bolt. It also shoots much smoother and quieter.
Previously I couldn't shoot 25 paintballs in my EXT eForce at full auto without breaking a ball. Today I went out and shot approximately 200 balls in full auto with no breakage. I'm a believer.
I did have to remove the white plastic ring that fit inside my Red Bolt to make this work, however after I removed it, the fit was perfect. I really would have liked some documentation to instruct me on this, though.
I will report after I've used it in play, but these preliminary tests make me extremely happy.
Conclusion:
Can't go wrong on this upgrade. It's one of the most inexpensive accessories you can buy in paintball, and it really improved my gun.