Originally Posted by 4G010H3R0
Im currently using a freak bored barrel with the techt bolt(bolt cant be turned down because of the rubber bolt head and my bolt never gets stuck, even in my .677 insert.) All tippmann upgrades, few home brew mods.
This is really good to know. I would really like to pick up the techt bolt for my freaked TPX but didn't know if it would play nice with the inserts. Also, when you upgraded the bolt did you leave the stock spring in or are you using one from the TechT spring kit?