SIGforum
Ruger Mark IV lowers available?
October 14, 2026, 11:15 AM
RNshooterRuger Mark IV lowers available?
Hey all-
Does anyone know where to source Ruger Mark IV lowers/grip frames? The upper is the serialized part so they don't need an FFL transfer.
Numrich has Mark III in stock on sale for $12 but I can't seem to find anything available for the Mark IV for under $300. Midway does sell a nice Volquartsen lower but it's priced like you would expect.
Bruce
"The designer of the gun had clearly not been instructed to beat about the bush. 'Make it evil,' he'd been told. 'Make it totally clear that this gun has a right end and a wrong end. Make it totally clear to anyone standing at the wrong end that things are going badly for them. If that means sticking all sort of spikes and prongs and blackened bits all over it then so be it. This is not a gun for hanging over the fireplace or sticking in the umbrella stand, it is a gun for going out and making people miserable with." -Douglas Adams
“It is just as difficult and dangerous to try to free a people that wants to remain servile as it is to try to enslave a people that wants to remain free."
-Niccolo Machiavelli
The trouble with fighting for human freedom is that one spends most of one's time defending scoundrels. For it is against scoundrels that oppressive laws are first aimed, and oppression must be stopped at the beginning if it is to be stopped at all. -Mencken
October 14, 2026, 02:17 PM
92fstechIf you find one, let me know. I've got some extra uppers lying around and wouldn't mind having a factory .22/45 lower to go with them.
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Any comments made by this poster are my own and do not reflect the views or opinions of my employer.
October 14, 2026, 02:33 PM
RNshooterquote:
Originally posted by 92fstech:
If you find one, let me know. I've got some extra uppers lying around and wouldn't mind having a factory .22/45 lower to go with them.
Yeah, I think it's your fault that I am looking! It was your thread that made me look at uppers on the Volquartsen website. $30 for a pencil upper!
Bruce
"The designer of the gun had clearly not been instructed to beat about the bush. 'Make it evil,' he'd been told. 'Make it totally clear that this gun has a right end and a wrong end. Make it totally clear to anyone standing at the wrong end that things are going badly for them. If that means sticking all sort of spikes and prongs and blackened bits all over it then so be it. This is not a gun for hanging over the fireplace or sticking in the umbrella stand, it is a gun for going out and making people miserable with." -Douglas Adams
“It is just as difficult and dangerous to try to free a people that wants to remain servile as it is to try to enslave a people that wants to remain free."
-Niccolo Machiavelli
The trouble with fighting for human freedom is that one spends most of one's time defending scoundrels. For it is against scoundrels that oppressive laws are first aimed, and oppression must be stopped at the beginning if it is to be stopped at all. -Mencken
October 14, 2026, 03:24 PM
VoshterkoffI never found any for a reasonable price. If I knew anything about 3D printing I would start a project to make a lower with collapsible stock rods M3/MP7 style. Would make a great compact squirrel and grouse gun.
October 14, 2026, 08:22 PM
hjs157Check out
Wirthwein Guns for all things Ruger MK-Series related. A bit of patience may be required to find exactly what you're looking for since their inventory continuously updates. Good luck!
https://wirthweinguns.com/?s=M...me&post_type=productOctober 14, 2026, 09:14 PM
RNshooterquote:
Originally posted by hjs157:
Check out
Wirthwein Guns for all things Ruger MK-Series related. A bit of patience may be required to find exactly what you're looking for since their inventory continuously updates. Good luck!
https://wirthweinguns.com/?s=M...me&post_type=product
Thanks. I was aware of them. The cheapest they have is $375. I think I paid $329 for the whole complete Mark IV 22/45. It's bonkers that I can get a Mark III lower for $12 and can't find a Mark IV for under $350. Bonkers.
Bruce
"The designer of the gun had clearly not been instructed to beat about the bush. 'Make it evil,' he'd been told. 'Make it totally clear that this gun has a right end and a wrong end. Make it totally clear to anyone standing at the wrong end that things are going badly for them. If that means sticking all sort of spikes and prongs and blackened bits all over it then so be it. This is not a gun for hanging over the fireplace or sticking in the umbrella stand, it is a gun for going out and making people miserable with." -Douglas Adams
“It is just as difficult and dangerous to try to free a people that wants to remain servile as it is to try to enslave a people that wants to remain free."
-Niccolo Machiavelli
The trouble with fighting for human freedom is that one spends most of one's time defending scoundrels. For it is against scoundrels that oppressive laws are first aimed, and oppression must be stopped at the beginning if it is to be stopped at all. -Mencken
October 15, 2026, 10:14 AM
1KPerDayIt’s always been like this due to the fairly unique nature of the design where the “receiver” or “upper” is the serialized firearm. Lowers are always in very high demand, or have been during the 15 or so years I’ve been in the market. I still have a couple uppers in need of MKII or MKIII 22/45 lowers.
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My hovercraft is full of eels.
October 15, 2026, 10:50 AM
92fstechquote:
Originally posted by RNshooter:
quote:
Originally posted by hjs157:
Check out
Wirthwein Guns for all things Ruger MK-Series related. A bit of patience may be required to find exactly what you're looking for since their inventory continuously updates. Good luck!
https://wirthweinguns.com/?s=M...me&post_type=product
Thanks. I was aware of them. The cheapest they have is $375. I think I paid $329 for the whole complete Mark IV 22/45. It's bonkers that I can get a Mark III lower for $12 and can't find a Mark IV for under $350. Bonkers.
Bruce
Yep. It's cheaper to buy a whole new gun than a lower off that site. Makes no sense.
-----------------------------------------------------------
Any comments made by this poster are my own and do not reflect the views or opinions of my employer.
October 15, 2026, 11:19 AM
RNshooterquote:
Originally posted by 1KPerDay:
It’s always been like this due to the fairly unique nature of the design where the “receiver” or “upper” is the serialized firearm. Lowers are always in very high demand, or have been during the 15 or so years I’ve been in the market. I still have a couple uppers in need of MKII or MKIII 22/45 lowers.
https://www.gunpartscorp.com/products/1387810Boom. There is a Mark III lower for $12.
Bruce
"The designer of the gun had clearly not been instructed to beat about the bush. 'Make it evil,' he'd been told. 'Make it totally clear that this gun has a right end and a wrong end. Make it totally clear to anyone standing at the wrong end that things are going badly for them. If that means sticking all sort of spikes and prongs and blackened bits all over it then so be it. This is not a gun for hanging over the fireplace or sticking in the umbrella stand, it is a gun for going out and making people miserable with." -Douglas Adams
“It is just as difficult and dangerous to try to free a people that wants to remain servile as it is to try to enslave a people that wants to remain free."
-Niccolo Machiavelli
The trouble with fighting for human freedom is that one spends most of one's time defending scoundrels. For it is against scoundrels that oppressive laws are first aimed, and oppression must be stopped at the beginning if it is to be stopped at all. -Mencken
October 15, 2026, 11:33 AM
1KPerDayquote:
Originally posted by RNshooter:
quote:
Originally posted by 1KPerDay:
It’s always been like this due to the fairly unique nature of the design where the “receiver” or “upper” is the serialized firearm. Lowers are always in very high demand, or have been during the 15 or so years I’ve been in the market. I still have a couple uppers in need of MKII or MKIII 22/45 lowers.
https://www.gunpartscorp.com/products/1387810Boom. There is a Mark III lower for $12.
Bruce
Thank you. Any idea where I can get a complete lower? Ruger won't sell the guts/parts and Numrich only has about half of them, which add up to $225 and the rest are out of stock/unavailable and would add another benjamin probably. Not such a great deal since the complete pistols were only about $300 as you likely know.
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My hovercraft is full of eels.
October 15, 2026, 12:47 PM
RNshooterMy thought was to Ebay the mainspring and some small parts, then get the Volquartsen kit for the rest. Not super cheap but it will be way better than factory.
Bruce
"The designer of the gun had clearly not been instructed to beat about the bush. 'Make it evil,' he'd been told. 'Make it totally clear that this gun has a right end and a wrong end. Make it totally clear to anyone standing at the wrong end that things are going badly for them. If that means sticking all sort of spikes and prongs and blackened bits all over it then so be it. This is not a gun for hanging over the fireplace or sticking in the umbrella stand, it is a gun for going out and making people miserable with." -Douglas Adams
“It is just as difficult and dangerous to try to free a people that wants to remain servile as it is to try to enslave a people that wants to remain free."
-Niccolo Machiavelli
The trouble with fighting for human freedom is that one spends most of one's time defending scoundrels. For it is against scoundrels that oppressive laws are first aimed, and oppression must be stopped at the beginning if it is to be stopped at all. -Mencken