This replacement lock sleeve spring is for the Allflex MR2 50cc syringe. The Allflex Repeater Syringe has a streamlined design with fewer replacement parts. It's amber-colored barrel is less susceptible to UV sunlight compared to clear barrels. It has a easy-grip design that delivers medication when pressed from the back. It is made of metal and plastic construction. PART #6 in the picture.
Special order allow 4 to 5 weeks ship time.