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-   -   barrel screw head size (https://www.rimfirecentral.com/forums/showthread.php?t=788617)

bob finger 10-31-2016 12:37 PM

barrel screw head size
Does someone know what head size s Browning is using for the barrel screw?

My Buckmark URX was made in April 2015, and while I have an extensive set of allen/torx etc wrenches nothing, and I mean nothing fits. The actual wrench attachment seems to be recessed inside the head. A smallish torx goes in but does NOT grab.

Lawyers may have invented something new to keep us from changing barrels.

Any solution short of drilling and or an easy-out is appreciated. Thanks. bob

rdas 11-11-2016 05:38 PM


Originally Posted by bob finger (Post 7478265)
Success!!!! I was able to caress a 3mm allen wrench into the bolt head with a 12 ounce hammer and after a bit of heat the bolt came out. I had to put the wrench in a vise and tap the bolt off the wrench, but that is acceptable. bob

ps: still have not heard back from Browning. I won't be holding my breath.

Bob, I had this EXACT same experience with a new Buckmark (purchased in Oct 2016). The only hex wrench I could get in there was a 3mm, and it was a rather tight fit. So tight, in fact, that I couldn't get it to go all the way in (but it was enough to get the screw out without buggering it too badly). Thinking mine was just out of spec, I ordered a replacement from Browning. While ordering, I asked, and she said with conviction that it should be a 7/64 hex head. I haven't tried the replacement yet (just received it the other day). (EDIT: I have since checked it, and it's exactly like the stock screw... 7/64 spins freely, but a 3mm is an overly-tight fit.)

If the replacement is same way, I'll buy an extra 3mm wrench (or two) and sand the flats down a tiny bit, just until it slides in there nicely. Not ideal to need a special tool for this, but way better than rounding it off with the wrong size wrench or because the 3mm wouldn't go in fully.

bob finger 11-13-2016 07:56 AM

I received two "spare screws" the other day. Asked the seller about head size and was told "don't know", so I'm assuming what I got are a Browning part.

My 3mm wrench fits tight in both these "spare" screws. Absolutely NO WAY a 7/64 will go in without some file work on the wrench.

So, I'm convinced I can live with a dedicated 3mm wrench for the screws, and with 3 of em on hand I have a lifetime supply. bob

Bill T 11-17-2016 09:49 AM


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