30% off everything with coupon code OR 16" 5.56 Dissipator Barrel for $99.99 + $4.95 S/H with coupon code

Dissy barrel coupon code still working as of 11/27/15.

adjustable gas block make a difference in recoil

I agree. It can be done but the requirement of specialty parts makes it much less useful to me. I go for interchangeability with my AR's and lightweight bolts and unique gas pressures make a dissapator a boutique build IMO.

Ahh... dwell. You initially said timing. True dissipator have their challenges but with newer coatings, lighter materials and clearer understanding of how AR technology works it shouldn't be that difficult to make it reliable. Dissipators were only hit or miss back in the day anyway so I don't think you should rule them out altogether. My two cents.

Dwell time is too short. It'll require a lot of work to make it a reliable build.

Why do you say that?

Timing is done with the barrel nut, shims and torque specs.

Good luck timing this barrel