Pro-Shot AR Style Bore Guide for .308 Cal. - 7.62mm SPRING as a “64” it is

as a “64” it is almost always followed by a single series letter

durability and fast recovery for a high level of performance

Polymer follower

Securely fits a broad range of full-sized and compact guns

Pro-Shot AR Style Bore Guide for .308 Cal. - 7.62mm SPRING as a “64” it is709779600427 The AR style Bore Guide slides in place of the bolt carrier group assembly while cleaning. This centers the cleaning rod while preventing solvent from entering the upper receiver and trigger mechanism. The AR10 style bore guide can be used for both 7. 62mm and . 308 Cal. variants. Pro Shot's bore guides are manufactured using Delrin. Delrin is chemical resistant and will stand up to harsh chemicals, providing continual use.