ZOLI Z SPORT OWNED FROM NEW HAS A SPARE STOCK (UNUSED) SPARE THICKER RECOIL PAID TO ADJUST LENGTH OF PULL. BOSS LOCKING SYSTEM STEEL PROOF SILVER SOLDERED BARRELS CHROME LINED BARRELS REMOVABLE TITANIUM COATED TRIGGER . GUN IS IN EXCELLENT CONDITION HAPPY TO MEET TO TEST FIRE AT MY LOCAL GROUND.