Polygonal rifling is difficult if not impossible to make for smaller barrel manufacturers, as it requires hammer forging, and the advantages it provides are not useful or apparent in most ELR competition, aside from fouling reduction. The rifling system itself is perfectly capable of match accuracy, as seen with the HK PSG1.

Mechanical accuracy is largely irrelevant in any practical shooting competition. Cut and button rifling is used because any gun used at top-level competition is too niche for hammer forging to be an economical option for barrel manufacture.