One of the rifles which used the trapdoor breechblock design developed by Erskine S
and looks to have been repainted white for display
A logical repair in the 1840's but this gun
The robust lock still functions
The main differences were a switch to darker OD Green #7 straps
Original U.S. WWII Experimental Liner, Helmet, M-1, Crash - T19E1 Tank Crew Helmet Liner With USMA West Point Decals Antique Shotguns One of the rifles whichOriginal Item: Only One Available. Now this is a rare item! This is a very nice "high pressure" helmet liner, designed to be used with the T19E1 tankers helmet, which was never actually put into production. These liners are quite rare, and this is a heavily used, but good example. Many were used for training post war, which subjected the liners to quite a bit of wear and tear. There were no replacement parts, so they could not be repaired. This