I have 1 LA M700 with a PTG bolt and 1 SA M700 with a PTG bolt. Both bolts are 1 piece, so no need to get anything welded on. Both have the M16 extractor. PTG bolts can be a little stiff on the bolt lift / cocking compared to bolts supplied with custom actions, just know that on the front end. I have been very happy with both of mine. Make sure you get a good accurate measurement of the id of your receivers so your bolt doesn't bind when cycling. I had the gunsmith doing my builds do the measuring and sent that on to PTG.Picked up a a few actions right off the site. All stripped so I'm looking for some bolts..would yall have any input on which direction I should go? Just regular Remington or pages or??