Few firearm discoveries rival what Reed Knight Jr. uncovered inside the Colt factory — an untouched Model 1921 Thompson submachine gun that had remained hidden for decades. Paired with a factory HK53 machine gun and a suppressed HK Mark 23, this video examines three rare and historically significant weapons from his collection.
Spanning from early 20th-century American craftsmanship to modern military innovation, these firearms reflect key developments in submachine guns, assault rifles, and special operations sidearms. A closer look reveals how each fits into the broader evolution of military firearms history.
00:00 – Rare Guns of Reed Knight
00:40 – Last-Ever Colt Thompson Model 1921 to Leave Factory
01:35 – Reed Knight Discovers Colt Thompson 1921 Submachine Gun
02:15 – Hidden Rooms of Colt Factory
03:55 – Colt Thompson 1921 Intricate Details
05:29 – Heckler & Koch HK53 Factory Original Machine Gun
06:33 – Heckler & Koch Mark 23 (w/ Matching OHG Silencer)
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