HI Iron Ridge Will need to see the whole firearm, so we can determine what the problem is. who set up the rifle ? what type of action spring is being used. Etc. you will have a gap between the carrier and Buffer. But hard to work it out on line/ give us a call or email us your phone number and we can figure this out, never had this issue with other builds. thx. Tech@IronRidgeGuns.com