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AR15.COM
8/20/2025 8:35:50 PM EDT
Love them or hate them......PSA has had some great sales this summer. I picked up a threaded Mk IV 22/45 on sale and ordered some initial upgrades today, mainly a Volquartsen competition kit and a Tandemkross red dot mount. I am not a fan of the chunky aluminum pic rail it came with and wondering what some of the hive is running red dot wise on their Rugers.
I'm kinda leaning towards Holosun 407/507 series but not sure of C or K models.
8/20/2025 8:39:40 PM EDT
[#1]
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I tried that whole cancer thing. It wasn't for me. Good Riddance.
8/21/2025 10:02:15 AM EDT
[#2]
407c on egw dovetail mount, Volquartsen cut the bbl to 4"

Attached File
__________________
"KAC drip feeds their stockholm-syndrome-customer-base with bland and old products to keep them going with the Rolex company model of business to keep everything scarce and high priced" the_answer_is_42
8/21/2025 1:26:50 PM EDT
[#3]
Originally Posted By BubbaShootz:
Love them or hate them......PSA has had some great sales this summer. I picked up a threaded Mk IV 22/45 on sale and ordered some initial upgrades today, mainly a Volquartsen competition kit and a Tandemkross red dot mount. I am not a fan of the chunky aluminum pic rail it came with and wondering what some of the hive is running red dot wise on their Rugers.
I'm kinda leaning towards Holosun 407/507 series but not sure of C or K models.
View Quote
Fun guns.  I built one of them before threaded barrels were so popular.
I think the only thing factory on it is the Frame/Barrel.  Every internal piece is either Volquartsen or Kidd... LOL, I spent more on go fast goodies than the gun cost to buy.  I wished it had a threaded barrel.

I used it too shoot Bowlin pin shoots every month at the Gun club, so I could shoot in .22, 9mm, .40 and .45 classes.  If I'm driving up there, I want as much trigger time as I can get. Each stage is under 10 seconds, or it better bet.. :)
LARUEMINATI
NRA Endowment Life Member
Originally Posted By Boom_Stick:
""AKs are for villagers you have to tell not to shit in their water supply.""
8/21/2025 5:58:52 PM EDT
[#4]
Quote History
Originally Posted By Blacktoothgrin:
407c on egw dovetail mount, Volquartsen cut the bbl to 4"

https://www.ar15.com/media/mediaFiles/476077/20250327_130248_jpg-3611199.JPG
View Quote

That's sexy.
"All welchers should be removed from the EE".-Aimless
8/26/2025 11:12:58 AM EDT
[#5]
507Comp and a Rucker Machine co-witness mount.

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8/26/2025 11:55:30 PM EDT
[Last Edit: NorthPolar][Edited] [#6]
I didn't even know that mount was a thing.  I think I know what I'm buying come payday.

I had a custom mount made for a Holosun SCS tying to get closer to cowitness.  A plug and play solution makes me a lot happier.

8/28/2025 4:57:21 AM EDT
[#7]
I modified the ruger rail to take this RD. Very happy with it.

Please help St Jude children's hospital.
9/3/2025 4:12:04 PM EDT
[#8]
I have a Tandemcross mount and a PA red dot (not sure of the model but it was on sale & cheap!)

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9/3/2025 9:27:49 PM EDT
[#9]
I put a 507 green on mine. The pic below is before with the Fastfire which I never had an issue with.
9/5/2025 4:54:58 AM EDT
[#10]
I have a Holosun eps on my Silencer Shop Mk IV. It uses a mount with the footprint that replaced the factory picatinny rail. Used the picatinny rail to make a weapon light mount under the barrel. It's awesome, I use a Ruged Mustang on it.
9/5/2025 6:53:53 AM EDT
[#11]
9/5/2025 6:03:14 PM EDT
[#12]
favorite 22 range toys
I have 2 22/45s one with Volquartsen fire control the other
stock. trigger blades are apex str8
ones 6inch taper with irons.
other is 3.5inch threaded 1/2x28 with a holo508 on a dovetail plate.
sparrow when I want to be quiet.
9/12/2025 5:51:04 AM EDT
[#13]
Quote History
Originally Posted By spin180:
507Comp and a Rucker Machine co-witness mount.

https://www.ar15.com/media/mediaFiles/121158/20250826_1022021_jpg-3614179.JPG
View Quote



Oh boy, found something to add to my "wish list".
Nice setup.
This upgraded web site sucks!!!
9/12/2025 5:52:14 AM EDT
[#14]
Quote History
Originally Posted By bravo5two:
I have a Tandemcross mount and a PA red dot (not sure of the model but it was on sale & cheap!)

https://www.ar15.com/media/mediaFiles/27381/IMG_3838_jpg-3618539.JPG
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How is that comp? Seen that one before and debated about it.
This upgraded web site sucks!!!
9/12/2025 4:15:05 PM EDT
[#15]
Bought this Wednesday and it cleared ATF jail this morning.  Just ordered a Volq Comp kit, Maddmacs Precision mount and Vortex Defender XL optic for it.  Should be a fun little plinker.
10/8/2025 9:54:04 AM EDT
[#16]
I did this a couple months go. MK IV 22/45. I kept the factory pic rail, but did put a bunch of Tandemkross stuff on it.
I bought this one as a base gun for $350 NIB.

https://ruger.com/products/markIV2245/specSheets/40190.html

I can't post pictures of mine because I don't want to use a image site, but it looks pretty much the same, just with a bunch of Tandemkross parts on it. It is just as accurate from the bench as my MK III Hunter, which surprised me given the 2" shorter barrel.
I'd like to get one of the Silencer Shop 22/45's.
11/9/2025 12:39:50 PM EDT
[#17]
I have started filing down the stock hammer hook as it has way to much material. Used a diamond stone and some feeler gauges. Filed it down with a .025 feeler gauge and it is alot better. Just hook the hammer on the edge of the feeler and slide it across the stone till it gets easy and is riding on the feeler gauge. Have to shoot it before going shallower.
11/22/2025 7:40:22 AM EDT
[#18]
I  refer to this as the “giggle gun”



22/45 Lite with Holosun 407c in a Lobos mount.  Matrix arms bolt, volquartsen trigger, tandemkross safety, LOK grips, OCL Ti can.
11/27/2025 12:12:06 PM EDT
[#19]
Got the stock bits at a tolerable level now. Took a little off the front of the trigger bar sear activator which reduced the trigger reset considerably. Filed the hammer hook down to .024, reducing trigger pull and creep. The trigger now breaks closer to the frame with not much overtravel. Magazine safety was a free fix by flipping the stock spring over to push up on the magazine safety piece constantly.
12/16/2025 8:19:53 AM EDT
[#20]
They are fun guns. Can't wait for Ruger to come out with a high capacity version!

On going to war over religion: "You're basically killing each other to see who's got the better imaginary friend." - Richard Jeni
12/19/2025 5:31:40 PM EDT
[#21]
Quote History
Originally Posted By airgunner:
They are fun guns. Can't wait for Ruger to come out with a high capacity version!

https://i.imgur.com/8kj2pwr.jpg
View Quote

Same
__________________
"KAC drip feeds their stockholm-syndrome-customer-base with bland and old products to keep them going with the Rolex company model of business to keep everything scarce and high priced" the_answer_is_42
12/19/2025 5:47:29 PM EDT
[#22]
Holosun 507 Comp

Tom Sawyer.

"If The Rules brought us to this, what use are they?"
12/20/2025 1:32:29 PM EDT
[#23]
Quote History
Originally Posted By tortilla-flats:
Holosun 507 Comp

https://www.ar15.com/media/mediaFiles/15341/20240428_132407-3545154.jpg
View Quote

What upper is that?
__________________
"KAC drip feeds their stockholm-syndrome-customer-base with bland and old products to keep them going with the Rolex company model of business to keep everything scarce and high priced" the_answer_is_42
12/20/2025 1:56:37 PM EDT
[#24]
Quote History
Originally Posted By Blacktoothgrin:

What upper is that?
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Quote History
Originally Posted By Blacktoothgrin:
Originally Posted By tortilla-flats:
Holosun 507 Comp

https://www.ar15.com/media/mediaFiles/15341/20240428_132407-3545154.jpg

What upper is that?
Entire gun (although you probably could get just the upper) is a Volquartsen Mamba-X 4.5".

Tom Sawyer.

"If The Rules brought us to this, what use are they?"
2/5/2026 5:04:56 PM EDT
[#25]
Quote History
Originally Posted By tortilla-flats:
Entire gun (although you probably could get just the upper) is a Volquartsen Mamba-X 4.5".

View Quote


I just rediscovered the joys of rimfire shooting with a 22/45 Lite.  I'm thinking of getting a Volquartsen Black Mamba.  As someone who has dropped the coin, is it worth it?


Thanks in advance.


Junkyard
2/13/2026 11:58:36 PM EDT
[#26]
Quote History
Originally Posted By Junkyard:


I just rediscovered the joys of rimfire shooting with a 22/45 Lite.  I'm thinking of getting a Volquartsen Black Mamba.  As someone who has dropped the coin, is it worth it?


Thanks in advance.


Junkyard
View Quote


Your question wasn't directed to me but I have a few Mark IVs and a couple of the 4.5" and 6" Volquartsen Mambas. If the Mamba is in the budget I dont think you can go wrong. The trigger is already upgraded, the upper is light weight and they shoot like lasers. The competition bolt is also very nice having the extension on the back for easy cycling and mine all run smooth.

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