The Ruger Mark IV Tactical – Model 40149 delivers serious performance in a lightweight, feature-rich rimfire platform. Chambered in .22 Long Rifle, it features a 4.4-inch cold hammer-forged barrel with 1/2×28 threading, making it ideal for suppressor use or other muzzle attachments.
Its black anodized aluminum receiver is topped with a Picatinny optics rail, while a second under-barrel rail offers space for lights, lasers, or other tactical accessories. The pistol’s gray synthetic grips are checkered for a non-slip feel and offer durability under extended use.
Like all Mark IV pistols, this model features Ruger’s one-button takedown system, making cleaning and maintenance quick and easy. The adjustable rear sight and fixed front sight allow precise shooting out of the box, and the frame is fully compatible with most Mark IV 22/45 aftermarket parts and upgrades.
Whether for competition, training, or tactical-style plinking, the Mark IV Tactical is the ultimate all-purpose rimfire.
Key Features:
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Part Number: 40149
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Caliber: .22 Long Rifle
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Capacity: 10+1 rounds
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Barrel Length: 4.4 inches, threaded 1/2×28
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Receiver: Black anodized aluminum
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Grips: Gray synthetic, checkered
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Sights: Fixed front, adjustable rear
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Rails: Picatinny top and bottom
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Safety: Ambidextrous manual thumb safety
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Action: Single-action blowback
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Trigger: Clean single-stage
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Included Accessories: Two 10-round magazines, thread protector
Manufacturer Specifications:
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Overall Length: 8.5 inches
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Weight: 33.3 oz
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Twist Rate: 1:16” RH
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Grooves: 6
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Finish: Black anodized upper, matte black lower
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Frame Style: Tactical with dual rails
Frequently Asked Questions:
Q: Is this pistol suppressor-ready?
A: Yes, it includes a 1/2×28 threaded barrel and thread protector for suppressor or compensator use.
Q: Can I mount a red dot sight?
A: Yes, the top Picatinny rail is ready for mounting red dots or scopes.
Q: Is this model optics-ready from the factory?
A: Yes, both rails come factory-installed—no gunsmithing required.
Q: Are the grips replaceable?
A: Yes, the frame accepts standard Mark IV 22/45 grip panels.
Q: Is this an OEM Ruger product?
A: Yes, this is a genuine Ruger factory model, part number 40149.
Brought to you by Black Bayou Armory.
