40 caliber barrels. Dec 16, 2023 9:49:07 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Hank on Dec 16, 2023 9:49:07 GMT -5 For those of you how have been wanting a 40 caliber barrel, I now have them back in stock. www.hanksprecisiongunparts.com