Used piston guide sleeve.  One of the most expensive parts of the tool.  Cosmetically used but in excellent condition. Included is the Presser Pin, Pin for Power regulation, Pin Safety,   Selling at a bargain. After market prices for all included parts below.  The whole assembly is $39.99 
Will come packaged in a Priority Flat Rate Envelope.
FACTORY PRICING   

PART 3785 PISTON GUIDE $199.00

PART 3736 RETAINING RING $14.30

PART 3734 PRESSURE PIN $42.90

PART 3735 PIN $57.20

PART 3750 RETAINING RING $7.15

PART 3733 PIN $31.46