What is a used Marlin Model 512 Slugmaster worth today?

Based on current market trends, a Marlin Model 512 Slugmaster in very good to excellent condition typically sells in the $200 to $300 range. Pricing can be lower for heavy wear or missing parts and higher for like-new condition, upgrades, or desirable configurations.

What factors affect the value of my Model 512 Slugmaster?

Condition is the biggest driver, then configuration and included accessories. Things like overall wear, bore condition, finish, function, optics, extra magazines, chokes, boxes, paperwork, and original parts can all move the value up or down.

Will you buy my Model 512 Slugmaster if it’s worn, modified, or missing parts?

Often yes. Normal wear, many common upgrades, and minor issues are usually fine. Just note anything important in the description and include clear photos so we can price it accurately.

How do I ship my firearm safely and legally?

After you accept an offer, we send a prepaid shipping label and step-by-step instructions. You’re responsible for packaging the firearm securely, then you drop it off with the carrier. All transfers are handled through the proper FFL process.

How quickly will I get paid?

Payment is sent by check or ACH direct deposit. After we receive and verify the firearm matches the submission, payment is issued quickly. You’ll choose your preferred method during acceptance.

Make/Model Valuation Guides Marlin Model 512 Slugmaster

Published: September 13, 2025 | Updated: January 31, 2026

How Much is My Marlin Model 512 Slugmaster Worth?

Curious about how much your Marlin Model 512 Slugmaster is worth? Whether you’re looking to sell or simply understand its worth, we’ll help you assess the market value of this iconic and reliable shotgun.

Based on current market trends, a Marlin Model 512 Slugmaster in very good to excellent condition typically retails for between $200 and $300.

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2026 Marlin Model 512 Slugmaster Value Guide

Marlin Quality

Valuing the Marlin Model 512 Slugmaster

The Marlin Model 512 Slugmaster is a bolt-action shotgun built specifically for shooting slugs, making it a top choice for deer hunting in slug-only states. It comes chambered in 12 or 20 gauge.

With a rifled barrel, detachable magazine, and heavy-duty construction, the 512 Slugmaster is highly accurate and built to withstand tough hunting conditions.

At WeBuyGuns.com, we understand the market value of these firearms and are committed to providing you with a fair and competitive offer. Submit your Marlin Model 512 Slugmaster today for a free valuation and let us make an offer that reflects the quality and legacy of your firearm.

Common Variants of the Marlin Model 512 Slugmaster

The Marlin Model 512 Slugmaster is available in a variety of models and configurations, each catering to different shooting needs and preferences. Below are some of the most popular variants, each offering unique features:

Marlin 512 Slugmaster 12 Gauge

Bolt-action 12-gauge shotgun with rifled barrel and box magazine, designed for slug use.

Marlin 512 Slugmaster 20 Gauge

Compact 20-gauge version ideal for younger shooters or tighter woods hunting.

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Factors That Influence Marlin Model 512 Slugmaster Values

When determining the value of your Marlin Model 512 Slugmaster, several factors come into play. Here’s what we consider:

Condition: Firearms in excellent condition — clean bore, minimal wear, and no significant damage — will command higher prices.
Accessories: Adding accessories, optics, additional magazines and having original packaging can increase value.
Rarity: Limited edition and vintage Marlin models in pristine condition often have added value.
Market Demand: Popular models perform well on the market due to their practicality and widespread use.
Original Box & Documentation: Presence of the original Marlin box or case can increase offer value, lack of the original box will typically decrease the offer value.
Aftermarket Modifications: Aftermarket modifications and finishing can affect offer values but rarely add significant value in the secondary market.

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About Us

Our mission is to make the process of selling your firearm as easy and convenient as possible.

Selling a firearm can be time-consuming and legally complex. At webuyguns.com, we streamline the process by purchasing directly from you, saving you time and ensuring a legally compliant, hassle-free transaction. With decades of experience, we provide fair market evaluations and encourage you to compare our offers locally to see the value we bring.

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