Polymer80 produced the phrase “eighty percent package” preferred. In truth, most Glock clones with non-OEM frames get theirs from Polymer80. Holster support—which is very important—is good for Polymer80 frames way too. The PMFs assembled from these kits and linked products are known as “ghost guns” because they are typically marketed https://ghostgunsofficial.com/product-category/pistols-build-kit/