This ebay Buy-It-Now offering provides a new OEM genuine hammer case kit pulled from an INGERSOLL RAND model 2145QiMAX or 2155QiMAX tool. 

The parts group provided and listed below is: 
1. 2145-D727 hammer case with 2145-641 anvil bushing factory installed. The gasket is not included with this item.

This Ingersoll Rand genuine part fits 3/4" drive 2145QiMAX and 1" drive 2155QiMAX models. My ebay listings have parts that are in stock and ready to ship. 

The shipping weight is 2 pounds with a USPS priority flat rate envelope, ebay label, tracking and insurance to all 50 states and Puerto Rico. International shipping is done with the ebay global shipping program.