Uncle Mike's 24580 Hammer Extension for Marlin Lever Actions (1983 and Later), BLACK

We recently acquired a Marlin 336 CS in 30-30 Win with a serial number identifying the production date as 1984. It shoots well, though my old eyes needed the assistance of the Burris scope in order to make full use of its capability. With the addition of the scope, the space between scope and hammer got just a little tight, and a majority of the kind folks on the marlinowners forum recommended this extension. Glad they did as it works well and I would recommend it too.This hammer extension from Uncle Mike's is priced well as compared to others and it was very easy to install. The instructions talk about 'stoning' a small indent on the hammer into which the set screw can be anchored, but I found that the sides of the hammer on our Marlin already had such indents perfectly placed on either side. All I had to do was start the set screw, place it on the hammer (right handed set in my case), tighten the set screw about 90% (jiggling lightly to make sure it got properly seated in the afore-mentioned indent), and then get it nicely seated before tightening all the way. Not ape-tightened mind you, but nicely snug so that there is no play. This was not difficult to do with the supplied, very small Allen wrench.If you would like to see pictures I took of this hammer extension battery mounted on our 336 CS, please navigate to the hammer extension's main sales page, scroll down to where the "Most Helpful Customer Reviews" section starts, and look to the right of that area for the "Product Images From Customers" section. It really was easy to mount and does not look bad at all.I have put 10 rounds downrange and found the need to tighten just a little bit at the end of the day. If this continues, I will probably use a little Loctite Blue once 100% sure that the extension is mounted exactly as I want it. As it is I am completely satisfied as the extension allows quick hammer cocking without any interference from the scope, and that is exactly what I was looking for.Affordable, easy to install and does the job as described by the manufacturer. If you are looking for a hammer extension of this size, style and design, for use as I have described above, then I recommend giving this hammer extension from Uncle Mike's a try for your Marlin 336 CS too.Go for it.

This fits perfectly on my Henry H010G. Nice and solid. Also including two grub screws is a nice touch.

I put it on and it was easy to install, but I didn’t tighten the Allen screw. My son went to sight my gun and it came off and lost it and it was all my fault and I will buy another one. It fit well on my Henry and it was easy to install. You really need one. on lever action rifles.It helps lower the hammer when you have gloves on or if the scope hangs down!

Would have been great but the set screw stripped and now it's on forever unless i drill it out! Didn't tighten up as much as I wanted so it rattles a little

Worked good for me no issues

got it for my 2024 1894 357 marlin in spite of all the negative reviews about fit and retention, i had the same issue loose fit and even after using extra locktite on the tiny set screws it would come loose after 6 to 10 times off cycling the aciton and dropping the hammer , repeated the procces several times and gave up , my hammer has the cutouts on its side from the factory , threw it in the garbage and got a ranger point precision great fit and works great after 60 rounds

This fit my 1988 Marlin 30 AW perfectly, the hammer already has the indents for the set screw, I do recommend a bit of Loctite on the set screw and get a proper Allen wrench, the one that comes with the extension is no good.

The one I got did not have a set screw or allen wrench.