3 replies to this topic

[guy sajer]

Were all Colt M1921 barrels the same ? Same number of grooves , groove spacing , taper , etc ?

Thanks

[gijive]

No. The earliest barrels below serial number 1000 had the serial number of the gun stamped on the breech end of the barrel. The fins on the earlier barrels tended to be thinner than the later barrels. Although, I have seen varying degrees of thickness on the Colt barrel fins. After 1932 the sceond style compensator was introduced and it was larger had had a different thread pitch than the first type compensators. New barrels were manufactured and these barrels are thicker near the front and the fins tend to be thicker than the earlier barrels that were the '21A configuration. The Colt barrels I have observed have twenty-nine fins including the last bump near the front end of the barrel and not counting the barrel flange that fits against the receiver.

[John Jr]

Colt had Remington build all the barrels so there is no such thing as a "COLT" barrel.

[guy sajer]

Thanks guys . I appreciate the info !