Enfield Gunsmithing - Problems with striker mk4…

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Problems with striker mk4…

Printed From: Enfield-Rifles.com
Category: Enfields
Forum Name: Enfield Gunsmithing
Forum Description: Submit any how-to's or other gunsmithing suggestions here.
URL: http://www.enfield-rifles.com/forum_posts.asp?TID=14409
Printed Date: March 26 2026 at 2:51pm
Software Version: Web Wiz Forums 12.07 - https://www.webwizforums.com

Topic: Problems with striker mk4…

Posted By: Bruce2160
Subject: Problems with striker mk4…
Date Posted: February 06 2026 at 3:13am

he!!o,

I shoot a Lee Enfield .303 Mk4 with great enthusiasm. Unfortunately, I have had major problems removing the firing pin (“striker”). The threaded joint is seized in the cocking piece, and turning the striker is virtually impossible. Several wrenches have already been ruined. (The locking screw in the cocking piece has, of course, been removed.)

Good advice is hard to come by, especially since Mk4 strikers are currently not available. Any help is very welcome, as the rifle shoots excellently…

Thanks Bruce

Replies:

Posted By: Shamu
Date Posted: February 06 2026 at 9:30am

Many of the aftermarket tools are rubbish.

Many make their own by grinding down an appropriate sized long neck socket!

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Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)

Posted By: Sauron
Date Posted: February 06 2026 at 12:55pm

I'm assuming you've doused it with penetrating oil?

Posted By: Zed
Date Posted: February 06 2026 at 1:44pm

I assume this is a No4 Mk1 rifle.

Some heat applied to the cocking piece, would be worth a try. If that doesn't work, you may need to cut the firing pin and replace both. I would recommend changing the spring as well as the firing pin and cocking piece.

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It's nice to be important, but it's more important to be nice!

Posted By: A square 10
Date Posted: February 06 2026 at 3:18pm

i was curious as to the mk 4 comment as well , - is it a 22cal ?

Posted By: Bruce2160
Date Posted: February 06 2026 at 3:25pm

Thank you for the advise. Seems like cutting the pin is my last issue. Unfortunately it is very hard to find a pin available in stock.

Posted By: Bruce2160
Date Posted: February 06 2026 at 3:26pm

no, it‘s in 303…

Posted By: A square 10
Date Posted: February 06 2026 at 4:15pm

then it must be a no4 - not a mkIV - these terms make a huge difference here , i wish you luck and suggest that the soak in kroil and maybe the heat might be a good thing to try ,