Description
The Tactical Solutions Pac-Lite is the barrel-and-receiver swap that turns a heavy Ruger rimfire into something you can shoot all day without your arm getting tired. It fits the Ruger Mark I, Mark II, Mark III, and the 22/45, giving you a fluted, threaded 6-inch upper that looks sharp and, more importantly, shoots where you point it. The bore is hand-chambered chromoly with a target crown, which is the kind of detail that shows up on paper once you settle in behind it.
Why the Pac-Lite Feels Different in Your Hand
The big story here is weight. The receiver is milled from 6061-T6 aluminum with a black anodized finish, so the whole assembly rides way lighter than a factory steel bull barrel. That lighter nose changes how the gun balances and points, and a lot of folks find their groups tighten up simply because the pistol is easier to hold steady. Fluting isn't just for looks either, it sheds a little more weight and helps the barrel look the part.
Threaded and Ready for a Can
The muzzle is cut 1/2×28, the standard rimfire thread, so a suppressor or compensator twists right on. The one-inch outside diameter looks clean whether you run it bare or with a can hanging off the end. If quieting down your plinking sessions is on the list, this upper was built with that in mind.
Sights, Optics, and Getting It On the Frame
It ships with a blade ramp front and an adjustable rear sight, and the receiver comes drilled and tapped so you can add a rail and run a red dot when you're ready. Installation onto your existing Mark-series frame is straightforward and doesn't require a gunsmith for most people, which makes this an easy weekend upgrade. With a 1:16 twist and that chromoly bore, it's dialed in for target shooting, training, plinking, and small game work.
Key Specifications
- Manufacturer: Tactical Solutions
- Model: Pac-Lite
- Manufacturer Part Number: PL6TEMBRF
- UPC: 856365001714
- Caliber: 22 LR
- Barrel Length: 6"
- Fits: Ruger Mark I / II / III & 22/45
- Muzzle Threads: 1/2×28
- Twist Rate: 1:16
- Bore Material: Chrome Moly
- Receiver Material: 6061-T6 Aluminum
- Finish: Black Anodized
- Barrel Profile: Fluted, Threaded, Suppressor Ready
- Sights: Blade Ramp Front / Adjustable Rear
- Receiver: Drilled & Tapped for Optics Rail
- Muzzle: Target Crown
What’s Included
- Pac-Lite barrel and receiver assembly
- Blade ramp front sight
- Adjustable rear sight
Frequently Asked Questions
Will the Pac-Lite fit my Ruger pistol?
This 6-inch Pac-Lite is built for the Ruger Mark I, Mark II, Mark III, and the 22/45. It uses your existing grip frame, so you keep your lower and just swap the upper. If you have a Mark IV, you'll want the Pac-Lite IV version instead, since the frames are different.
Do I need a gunsmith to install the Pac-Lite?
For most people, no. It installs onto your existing Mark-series frame using the same takedown process as a factory upper, so a bit of patience is usually all it takes. There are plenty of walkthrough videos out there if you want to follow along your first time.
Is the barrel threaded for a suppressor?
Yes. The muzzle is threaded 1/2×28, which is the common rimfire thread pitch, so a suppressor or compensator twists right on. The one-inch outside diameter also gives it a clean look whether you run it bare or with a can attached.
Can I mount an optic on the Pac-Lite receiver?
The receiver comes drilled and tapped, so you can add a scope rail and run a red dot or scope. It also ships with a blade ramp front and adjustable rear sight if you'd rather keep it simple with irons.




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