Sightmark Triple Duty Universal Boresight Vertical Foregrip Our engineering design team has Our engineering design team has paid attention to all the important details to ensure that when you purchase a product of this quality and caliber that you can enjoy many years of reliable performance in the toughest conditions where domestic brands will not survive MI Extended AK 47 AK 74Handguard with Standard Topcover Simply place the base of the boresight onto the end of the barrel of your weapon and it will attach magnetically Live fire is only needed to fine tune the weapon being sighted in order to compensate for inconsistencies