Please Help ID Trigger Housing Group

[Oddball]

I would like to know what type trigger housing group this is. It is stamped Rockola. Is this considered a brazed type? It also has the oil hole. Thanks.

Information

Warning: This is a relatively older thread This discussion is older than 360 days. Some information contained in it may no longer be current.

[JimF4M1s (Deceased)]

Type lV, stamp brazed.

[Oddball]

I thought only the type V had the oil hole. Thanks for clarifying

[lbelflowers]

Most were done during an arsenal rebuild.

[DaveHH]

Winchester and Inland put the oil holes in solid milled trigger housings from spring 44 on. Not sure about stamped fabricated TH. I am fascinated by the fabricated TH, what an engineering and production story and a better part too.