Carbine of Interest Inland 270

AND after a much closer inspection and reflection, Bruce now concurs with many others that this 270 most likely would not have been issued out to the Army for Combat use in this "modified slide bolt cam interface design" and due to its still retaining its Type 1 Extractor with its Type 1 Plunger configuration. He agrees that its more likely 270 stayed in house at Inland as a Test Rifle. He also looked closely at the unmarked type 3 Hammer and said it may well be a prototype Type 3 Hammer that was used by Inland for testing, and believes that is why there may be such significant Type 1 and Type 3 Hammer strike indentions on the non-Ordnance Bomb proof marked, but "P" marked Trigger Housing wall.

Edited by HammerGrunt - Oct 01 2021 at 5:48pm

@Dan, aside from the difference in the slide stop, I noticed that there are other significant differences between 270's slide and the slide in the picture provided by Ron Dalhamer. The 270 slide has a perpendicular surface on the right side whereas the one shown in Ron's picture is angular, thus possibly affecting the rate of bolt closure. Also, it appears that the width of the top of the cam cut is greater in Ron's picture compared to the 270 slide. Notice how thin the section is at the top left of the 15 slide (maybe 1/16") versus the 270 slide (~1/8") or about the same as a standard Type 1 slide. This could retard the bolt opening timing compared to the 270 slide. These slides look totally different to me.

Dan - Ive been hoping that you could find a time to post some information about the mold castings you did on this very early Inland with its mix of early prototype and early standard production parts. I was curious about the possible dimensional differences you would find comparing it to other early Inlands.

Thank you Dan for posting these additional earlier type of M1 Carbine Rear Sights. We know Inland changed these out very early on in their production run which makes these older type rear sights possibly some of the most uncommon Inland made parts to make it onto Inlands first batch of Production rifles. 

Inland 270 has much rougher / more extensive machining marks on the receiver’s top right side compared to all my other Carbines.

Edited by W5USMC - Dec 31 2022 at 10:00pm

I’m still amazed whenever I look at the parts and pieces on this Carbine #270 that were produced early in 1942 by a Company that had previously been producing Car steering wheels, as compared to the parts and pieces 6 Million Serial # later that were produced  by so many other American manufacturers in 1945. 

Sadly to True Marine...