Posted: 2/21/2026 8:17:39 PM EDT
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I have an older 22/45 stainless bull barrel that I want to convert to a slabside. The MK2 22/45's were never available in this configuration(outside of a few distributor blued 6 7/8 and 8" guns, and an even more limited 6 7/8 stainless slabside). Does anyone happen to have the dimensions of the slabside barrel? I figure if I can get the thickness of the barrel, my gunsmith should be able to cut down the sides, and eyeball the radius, but exact dimensions, including the readius would be even more helpful. Thanks |
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Originally Posted By ALASKANFIRE: If you can find a gun you could just swap the uppers. Might end up being the easiest route. the upper is the firearm, and the mkiiis have the lci and and inferior trigger requiring more parts to tune. also part of the reason i stick wtih the IIs is my old clark triggers, the set screw for overtravel is in the upper part of the trigger, and this part on the frame of the MKIIIs is cutout for the mag disconnect. so milling the barrel on an already tuned up gun is my preferred method |
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Originally Posted By ChemTrailZ: the upper is the firearm, and the mkiiis have the lci and and inferior trigger requiring more parts to tune. also part of the reason i stick wtih the IIs is my old clark triggers, the set screw for overtravel is in the upper part of the trigger, and this part on the frame of the MKIIIs is cutout for the mag disconnect. so milling the barrel on an already tuned up gun is my preferred method Originally Posted By ChemTrailZ: Originally Posted By ALASKANFIRE: If you can find a gun you could just swap the uppers. Might end up being the easiest route. the upper is the firearm, and the mkiiis have the lci and and inferior trigger requiring more parts to tune. also part of the reason i stick wtih the IIs is my old clark triggers, the set screw for overtravel is in the upper part of the trigger, and this part on the frame of the MKIIIs is cutout for the mag disconnect. so milling the barrel on an already tuned up gun is my preferred method I understand. That's why I was thinking you could buy something like this https://www.gunbroker.com/item/1146049858 and swap the upper to your lower. You could then put your upper on the new lower and either have a backup gun or sell it off and recoup some money. That was what I was suggesting 
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BikerNut:
Normal people like motorcycles. Real people like motorcycles.
People who don't like motorcycles are just... weird.
Normal people like motorcycles. Real people like motorcycles.
People who don't like motorcycles are just... weird.
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I recently picked up a BNIB MarkII MK-512GC (5.5" Slabside Target). The barrel is 0.74" wide at the flats and the radius starts ~0.397" from the end of the receiver. The weight of the barreled receiver (minus bolt) is 1lb, 2.8oz (or 18.8oz) total. I'm curious what the standard 5.5" bull barreled receiver weighs because I have to wonder if the weight savings of "slab siding" the standard bull barrel is enough to justify the work involved (milling the barrel and then refinishing it)? Might be both easier and result in more weight savings to simply cut the length of the barrel to say 4" instead of slab siding it? A 4" threaded barrel would definitely yield more weight saving (and balance better to) and if you don't need the front sight, would be a much easier job and that would not require refinishing the barrel. |
On going to war over religion: "You're basically killing each other to see who's got the better imaginary friend." - Richard Jeni
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Originally Posted By tgmr05: Volquartsen has uppers for sale and so does Wirthwein guns. Slabside appears out of stock currently. When's the last time Volquartsen had MK II's for sale? |
BikerNut:
Normal people like motorcycles. Real people like motorcycles.
People who don't like motorcycles are just... weird.
Normal people like motorcycles. Real people like motorcycles.
People who don't like motorcycles are just... weird.
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Originally Posted By ALASKANFIRE: When's the last time Volquartsen had MK II's for sale? Originally Posted By ALASKANFIRE: Originally Posted By tgmr05: Volquartsen has uppers for sale and so does Wirthwein guns. Slabside appears out of stock currently. When's the last time Volquartsen had MK II's for sale? Mark IIs, yep, probably a while ago. |
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Originally Posted By airgunner: I recently picked up a BNIB MarkII MK-512GC (5.5" Slabside Target). The barrel is 0.74" wide at the flats and the radius starts ~0.397" from the end of the receiver. The weight of the barreled receiver (minus bolt) is 1lb, 2.8oz (or 18.8oz) total. I'm curious what the standard 5.5" bull barreled receiver weighs because I have to wonder if the weight savings of "slab siding" the standard bull barrel is enough to justify the work involved (milling the barrel and then refinishing it)? Might be both easier and result in more weight savings to simply cut the length of the barrel to say 4" instead of slab siding it? A 4" threaded barrel would definitely yield more weight saving (and balance better to) and if you don't need the front sight, would be a much easier job and that would not require refinishing the barrel. It’s more of an esthetic thing than weight savings (though ruger used to claim the 6 7/8 slab side balanced the same as a 5.5” bull) refinishing wouldn’t be an issue with the stainless barrel. I’ll weight mine tonight and let you know. |
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Originally Posted By ChemTrailZ: It’s more of an esthetic thing than weight savings (though ruger used to claim the 6 7/8 slab side balanced the same as a 5.5” bull) refinishing wouldn’t be an issue with the stainless barrel. I’ll weight mine tonight and let you know. Originally Posted By ChemTrailZ: Originally Posted By airgunner: I recently picked up a BNIB MarkII MK-512GC (5.5" Slabside Target). The barrel is 0.74" wide at the flats and the radius starts ~0.397" from the end of the receiver. The weight of the barreled receiver (minus bolt) is 1lb, 2.8oz (or 18.8oz) total. I'm curious what the standard 5.5" bull barreled receiver weighs because I have to wonder if the weight savings of "slab siding" the standard bull barrel is enough to justify the work involved (milling the barrel and then refinishing it)? Might be both easier and result in more weight savings to simply cut the length of the barrel to say 4" instead of slab siding it? A 4" threaded barrel would definitely yield more weight saving (and balance better to) and if you don't need the front sight, would be a much easier job and that would not require refinishing the barrel. It’s more of an esthetic thing than weight savings (though ruger used to claim the 6 7/8 slab side balanced the same as a 5.5” bull) refinishing wouldn’t be an issue with the stainless barrel. I’ll weight mine tonight and let you know. @airgunner 1lb 3.5 oz, or 19.5 oz again, more of aesthetic thing, and .397 is about spot on from the receiver to the beginning of the warning billboard. |
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Originally Posted By ChemTrailZ: @airgunner 1lb 3.5 oz, or 19.5 oz again, more of aesthetic thing, and .397 is about spot on from the receiver to the beginning of the warning billboard. @ChemTrailZ Thanks for the numbers. That was kind of what I was expecting. But I get it, we want what we want and can't blame you for wanting to get rid of the "warning billboard". Being an SS barrel does take a lot of the extra work and expense out of the mix so if you trust your local smith to do it well and are OK with the price then why not? |
On going to war over religion: "You're basically killing each other to see who's got the better imaginary friend." - Richard Jeni
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Originally Posted By airgunner: @ChemTrailZ Thanks for the numbers. That was kind of what I was expecting. But I get it, we want what we want and can't blame you for wanting to get rid of the "warning billboard". Being an SS barrel does take a lot of the extra work and expense out of the mix so if you trust your local smith to do it well and are OK with the price then why not? want and feasible are 2 separate things, i still have to shop around, but i don't like to show up without dimensions and a concrete plan. |