Uncle Mike'sHammer Extension for Marlin Rifles, Firearm Hammer Grip Enhancement Accessory, Easy Cocking Aid for Scoped Guns, Blued Steel with Knurled Surface

highly recommend.

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.

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!

I thought this would work for me , it did after some filing and a bit of dremel work , ow it seems to fit and work 👍🏽

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

I ordered 2 Uncle Mikes Hammer extensionsFor Marlin 39AS neither one fits this hammerWhat is problem looks to wide for this hammer?Don’t Fit as orderedTalked to customer service they say it supposed to fit, not so on Marlin 39ASHelp

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.

Don’t even bother attempting to use the set screws. I believe it’s a #4-40 machine screw. Socket head cap or even slotted would be better than the supplied set screws. The spur extention is excellent and on all 5 of my Marlins.