What specific dovetail size does the Lyman LY-S12 Slot Blank fit, and what rifles is it commonly used with?

The Lyman LY-S12 Slot Blank is designed to fit a standard 3/8" (0.375 inches) rear barrel dovetail slot. It is compatible with a wide range of classic and modern rifles, including popular models like the Winchester Model 94, Ruger 10/22, Marlin, Savage, and Remington firearms that feature a standard 3/8" dovetail.

What is the primary purpose of the Lyman LY-S12 Slot Blank, and when would an Australian hunter or shooter typically use it?

The primary purpose of the LY-S12 Slot Blank is to fill and protect the empty dovetail slot on a rifle barrel after the factory rear iron sight has been removed. Australian hunters and shooters commonly use this when upgrading to a receiver-mounted peep sight or tang sight, or when mounting a low-profile rifle scope that requires clearance where the original rear sight once sat.

What material is the Lyman LY-S12 Slot Blank made from, and can it be customized for a precise fit?

The Lyman LY-S12 Slot Blank is crafted from high-quality, durable blued steel, giving it a professional black finish. Yes, its blued steel construction allows experienced gunsmiths or DIY enthusiasts to slightly file, reshape, or refinish the blank to achieve a perfectly flush, custom fit, especially for unique or slightly out-of-spec vintage dovetails.

Beyond aesthetics, what practical benefits does installing the Lyman LY-S12 Slot Blank offer for my rifle?

Installing the LY-S12 Slot Blank provides crucial protection for your rifle's barrel. It prevents the sharp, delicate edges of the empty dovetail cut from collecting dirt, moisture, and sustaining physical impact damage. This helps maintain the integrity and longevity of your firearm, especially in demanding Australian bush or outback conditions.

Rifle Dovetail Slot Blank - Lyman LY-S12

The Lyman Slot Blank 3/8" R D/T (Model: LY-S12, MPN: 3121040) is a precision-engineered gunsmithing accessory designed to fill the empty rear dovetail slot on a rifle barrel. When upgrading a rifle's sighting system to a receiver-mounted peep sight, a tang sight, or a low-profile optical scope, the factory rear leaf sight must often be removed to clear the sight picture or provide adequate objective lens clearance. This high-quality blued steel blank slides securely into the vacant 3/8" slot, restoring a clean, streamlined profile to the barrel while protecting the precise edges of the dovetail cut from debris, moisture, and physical damage.

Key Features:

Seamless Barrel Profile: Fills the empty dovetail slot to maintain a clean, professional, and factory-finished appearance.
Durable Blued Steel: Manufactured from solid steel with a classic black blued finish to match traditional rifle barrel finishes.
Debris and Impact Protection: Shields the sharp, delicate edges of the empty dovetail cut from collecting dirt, moisture, and sustaining physical impact.
Customizable Fitment: The steel construction allows gunsmiths or experienced DIYers to lightly file, reshape, or refinish the blank for a perfectly flush fit in vintage or slightly out-of-spec dovetails.
Static Mechanical Design: A purely mechanical component requiring no power, batteries, or electrical installation.

Product Specifications:

Brand: Lyman
Model / SKU: LY-S12 (MPN: 3121040)
Dovetail Fitment: Standard 3/8 inch (0.375 inches / 9.5mm) rear barrel dovetails
Physical Dimensions: Approximately 0.380" long, 0.650" wide, and 0.093" (3/32") deep
Weight: Net weight of under 15 grams (0.5 oz); packaged shipping weight of approximately 0.119 kg
Material: High-grade blued steel
Compatibility: Standard 3/8" rear dovetail slots on classic and modern rifles, including Winchester (Model 94, Model 52, 64, 70), Ruger (10/22), Marlin, Savage, and Remington models

Who It Is For:

The Lyman LY-S12 Slot Blank is an essential component for Australian target shooters, hunters, and vintage rifle restorers who are modifying their firearms. It is highly sought after by owners of classic lever-action rifles, such as Winchester and Marlin models, who are upgrading to traditional peep sights or modern low-profile optics. Whether you are a professional gunsmith working in an Australian workshop or a firearm enthusiast performing a DIY upgrade, this slot blank provides a simple, durable, and aesthetically pleasing solution to protect your rifle's barrel and maintain its classic appearance.

SKU	LY38556LP
Model #	LY-S12
Brand	Lyman
Shipping Weight	1.0000kg

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Lyman Ly-S12 Slot Blank 3/8 Inch Rear Dovetail Blued Steel Rifle

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