Keep the gun while not in use out of direct strong sunlight, UV does have a tendency to bleach out the co lours over time. so if you want to apply some form of coating try to find one with some UV protection. Though at this point I would like to add one of my pet hates "Case Co lours " and the percentage thereof on a gun is just one other method of the gun trade to wring more cash out of the second user gun purchaser.

The only lessons in my life I truly did learn from where the ones I paid for!