Profile: Stallings Machine is a small machine shop that specializes in short-run parts and proto-type work for industry. We have a small selection of products for the high power rifle community, the rightsight. This is available in two sizes, 2.9mm-4.9mm & 4.0mm-6.0mm. Our other products are 30mm ghemann adjustable iris, extra base, sun shade, sun shade for use with gehmann iris, and lens(.25 or .5).