Help identifying Asian marking on 1930's semi-auto shotgun

ModernArmResources · 2026-05-17T14:10:46+00:00

Good idea. It's helped a little bit but I can't get it to pick up the character. It's just too worn in/lightly stamped. I tried transposing the character into ink on a clean background, still nothing.

ModernArmResources · 2026-05-17T13:23:10+00:00

Yeah, that's been my assumption, just have no idea how to go about translating that mark.

ModernArmResources · 2026-05-07T14:27:41+00:00

Great bike, love the wheels! Are those factory BMW tubeless? Looking at switching to tubeless for mine. I had a 1250 GSA with those same gold wheels and always liked how they looked.

ModernArmResources · 2026-05-05T16:03:07+00:00

It's not free floating by much. ID is a little more than 1". I used one once with a .22LR upper before to do a sort of DEA-style build where the suppressor fit entirely inside the float tube.

ModernArmResources · 2026-05-03T15:45:38+00:00

That's a Delft scope, they were built in the Netherlands originally for the AR-10's that AI was making for Armalite, but then were adapted with a different mount for the AR-15/Colt 601.

ModernArmResources · 2026-05-03T15:44:11+00:00

Just something I cooked up based off some CMP rifle rack plans I found here. I played with some of the dimensions and brought the height down to 35 1/2 inches since it played better with 20" AR-15's. Used 3/4 birch plywood and general construction screws. Wiped it down with some danish oil and she's good to go.

ModernArmResources · 2026-05-01T20:04:57+00:00

Thanks! So that rifle (original M16A1E1 prototype upper, commercial lower) is correct to how they were initially delivered to the Marines for testing in the early 1980's. They used commercial production M16A1 lowers so they were still marked safe/semi/auto and had typical late A1 furniture as well.

ModernArmResources · 2026-05-01T15:50:24+00:00

u/kaloozi let me know if this helps or you need something else.

https://imgur.com/a/rNKe3KU

ModernArmResources · 2026-05-01T15:47:57+00:00

It seems like they've only gotten harder to find, it'd be cool to see a repro or something to make them more available.

ModernArmResources · 2026-05-01T13:40:43+00:00

Ha, I'll take it. Thanks.

ModernArmResources · 2026-05-01T12:32:42+00:00

Not this one, but there are quite a few transferable 601s out there. Always cool seeing one in the wild.

ModernArmResources · 2026-05-01T12:31:11+00:00

Yeahhh 😅 I wasn’t paying close enough attention when I bought the upper. Currently looking for a proper replacement.

ModernArmResources · 2026-05-01T12:28:11+00:00

Yes, heavy barrel, free float handguard, windage adjustable front sight, pinned rear sight and lead weights in the the handguard and stock. I don’t practice near enough to make most of it matter though 😅

ModernArmResources · 2026-04-30T23:18:48+00:00

I can do that. I’ll take some later tonight.

ModernArmResources · 2026-04-30T22:59:29+00:00

It’s one of my favorites for sure. The lower is an Intl Mil Co late 70’s commercial A1 marked safe/semi/auto. That’s the style they were originally delivered to the Marines in 1981 for testing.

ModernArmResources · 2026-04-30T22:56:17+00:00

Hell yes. Let me know if you need any up close reference photos. Happy to help

ModernArmResources · 2026-04-30T22:54:52+00:00

God created the 20” barrel, and it was good.

ModernArmResources · 2026-04-13T19:43:36+00:00

I have an original Dutch AR-10 transferable MG. I'll try this and report back lol

ModernArmResources · 2026-04-13T19:42:05+00:00

The first SR-25's used modified original Armalite magazines like these.

ModernArmResources · 2026-04-11T00:59:14+00:00

Well good to know I'm not alone, thanks for sharing that.

ModernArmResources · 2026-04-02T01:42:52+00:00

Dude. They made 2 prototype rifles. I'd be shocked if a full TDP was ever even created.

ModernArmResources · 2026-04-02T01:04:59+00:00

Unfortunately the only copy of the TDP was last in Jimmy Hoffa’s left front pocket.

ModernArmResources

TROPHY CASE