5:06Astro-skeleton, orrery finished, and functional demonstrationMark Frank26.9K viewsView & Download
18:20Everything You Should Know About AR Buffer SpringsSuperior Shooting Systems Inc335.5K viewsView & Download
0:10Astro skeleton, demo of bevel wheel drive to digital year counter, #2Mark Frank519 viewsView & Download
0:32AR-15 slow-mo cycle comparison with cut-away buffer tubeDavid Bookstaber Ballistics41.7K viewsView & Download
0:17Astro skeleton, calendar with celestial drive under demo conditionsMark Frank1.2K viewsView & Download
