Yankee Hill Machine

Constructed from 17-4 PH stainless steel. The R45® will find itself at home on a wide variety of firearms and calibers. The robust design allows it to be used on calibers ranging from .17HMR all the way up to the legendary .45-70 Government. The R45® ships with a 5/8-24” HUB Direct Thread Mount and ships with (1) YHM-2007 and (1) YHM-2146. The R45 accepts our full lineup of 1.375”-24 HUB mounting options. - Caliber: .45 - Weight: 12oz./13.6 w/adapter - Length: 6.40”/6.7” w/adapter - Diameter: 1.562” - Construction: 17-4 PH SS - Mount: 5/8”-24 Direct Thread HUB adapter - Decibel Rating: 132 dB - Full Auto Rated: Limited - 7.62x51 / .308 Winchester: 16" minimum barrel length - 5.56 NATO: 16" minimum barrel length - 300 Blackout: 7.5" minimum barrel length