A SEAL with a Stoner 63A in the Rung Sat Special Zone (RSSZ) below Saigon.
This gun has the 150-round snail drum magazine. Left hand feed guns ejected spent brass to the left and links to the right. Sometimes the spent brass would bounce off the feed chute of the snail drum and lodge in the ejection port to jam the gun. The right hand feed cover was developed to fix this problem. After the 150-rounds in the drum were expended, the gunner detached the drum and used the belted ammunition draped across his shoulders.