Which Nordic extension for M1?

[diversmith]

Hey all you Benelli experts....just wanted to verify which nordic mag tube extension to get for my HK marked M1. It is an 18.5" model that is currently 7+1 and would like to get it to 8+1. I know the tube will extend slightly past the barrel. Should I be getting the +5 tube to get the 8+1 capacity? Thanks for the help

[twodelta]

Yes. I put a +5 on mine, and can fit 8 in the mag tube.

[Bryan 45]

Will it accept an extension? The early HK marked M1s have a fixed tube. The only way to "replace" it w/ a +5 is to cut it off.

[diversmith]

Will it accept an extension? The early HK marked M1s have a fixed tube. The only way to "replace" it w/ a +5 is to cut it off.

I'm taking a wild guess it is a later HK marked gun since it can't be ghost loaded. I am planning on taking it apart this week for a top to bottom cleaning so I will know then.

[diversmith]

Just figured I would throw this out there in case it might help other M1 owners after doing some disassembly this morning and a little measuring.

I just ordered a +4 nordic ext from Midway. I have a +5 on my new M2 I just got from Benny Hill and comparing the two mag tubes side by side the +4 will be right in the middle giving me a total of 8+1. My new M2 holds 9+1 (+ ghost load) so the M1 should be 8+1 with the +4, and since it is a later HK marked gun, the mag tube just screwed right off and is modular with no cutting required. I also ordered up some Carlsons extended choke tubes in Lite Mod per Benny's recommendation. This should work great on my M1 since the +4 mag tube is going to stick out just a little...it will help make up some of the difference.

I will update after I get the parts and do the install.

Midway has a chart listed on the Nordic page giving all of the tube lengths and that was very helpful...anybody buying a tube that is not sure of how it will fit (depending on what model you are putting it on) should take a peek at that chart