External selective MX8 drop out trigger. Serial number 79xxx. from a type four receiver., There is some minor blue wear on the trigger bow as shown in the photo. The hammer springs have plenty of tension. My return policy is as follows. if I have mis-represented this product I will give you three days to return for a full refund. You may have to fit the triggers to your receiver. There could be some cost attached to that. That is not a reason to return.