Yankee Hill Machine Co Dust Cover 300 Blackout Fits AR Rifles Includes: Rod and Retaining Clip Spring

Yankee Hill Caliber Maarked Dust Cover For AR, 300 Blackout Md: YHM-111-300 YHM has long been a supplier of Caliber Marked upper receivers, but we soon asked oursleves "What if we want to change the caliber of that upper receiver?" For this reason