I bought from a military helicopter mechanic, and he told me it was modified

This is a vintage and rare Lincoln Heavy Duty Pistol Grip Grease Gun with a modified hose. It is suitable for any home and garden or workshop equipment use. The gun is made of silver and black color and is known for its high performance and quality. Its brand and model are Lincoln, and it has been manufactured in the United States.

The gun is ideal for those who are looking for a sturdy and reliable tool. It operates smoothly and delivers the grease evenly, making it easier to lubricate any equipment. It is suitable for air grease and sealant guns and can be used for a variety of purposes. Overall, this is a great investment for any DIY enthusiast or professional mechanic looking for a top-quality grease gun.