Mk I and MkII Return tube interchange ?

**tr63** · 03-19-2019 12:19 PM

Will the MkII end cap screw onto a MkI return tube ? Are the threads the same ?

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**Highly Recommended** · 03-19-2019 12:19 PM

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**AmEngRifles** · 03-19-2019 03:30 PM

One of the truly knowledgeable members will be along shortly to answer your inquiry. In the meantime, if I get to the safe and drag out my versions, I will check for you. Answer should be along shortly. My immediate reaction is to say YES...but I am a novice.

**AmEngRifles** · 03-19-2019 04:59 PM

OK, tried it and they crossed over with no problems. NOW< that is not to say that my Bren MkI was not build with something other than a MkI tube, but as it stands right now, they appear to be exactly the same in thread and pitch and length.

**Brit plumber** · 03-20-2019 12:38 PM

Exactly the same for very good reason. Most parts are interchangeable between marks, it’s just the level of assembly that changes. i.e. you can interchange bipod assemblies but a Mk2 bipod leg won’t fit a Mk1 bipod.

So you can fit a Mk2 Butt assembly on a Mk1 if you use the correct Mk2 fitting hardware.

**AmEngRifles** · 03-21-2019 02:03 PM

Thank you Brit plumber! Hope he sees his replies.

**tr63** · 03-21-2019 07:03 PM

Thanks guys . The end caps from a MKI and a MKII will screw onto all the return tubes of the Bren gum and are interchangeable , As I understand what is stated in this thread .

**AmEngRifles** · 03-22-2019 09:29 AM

Just curious, are you building a semi or a display gun?

**tr63** · 03-22-2019 11:19 AM

Originally Posted by AmEngRifles

Just curious, are you building a semi or a display gun?

Semi-auto build MkI and a MkII one of each ,I needed the return tube to complete my kits .

**AmEngRifles** · 03-23-2019 03:59 PM

Good to hear. Post some pics when you have them completed. I know they somewhat all the look the same, but those will be YOURS. That makes them very special. Are you looking at Weapons Guild? Loads of good information there for builders of semi autos. NOT to take anything anyway from the LOADS of good information HERE!

**tr63** · 03-24-2019 12:58 PM

Originally Posted by AmEngRifles

Good to hear. Post some pics when you have them completed. I know they somewhat all the look the same, but those will be YOURS. That makes them very special. Are you looking at Weapons Guild? Loads of good information there for builders of semi autos. NOT to take anything anyway from the LOADS of good information HERE!

Yes I am a member .

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