How Much Is a KelTec RDB Worth? (2026 Value Update)

KelTec RDB value is affected by the gun’s condition, the variant or configuration, and its accessories or upgrades.

How We Calculate Used Keltec RDB Values

Condition and Value

The value of a KelTec RDBl is directly tied to its condition. The better the bullpup rifle’s condition, the better its valuation.

To find your gun’s condition grade, have it appraised by a firearm professional. Gun appraisal usually has a fee, but we do it for free for gun sellers.

To see how we professionally evaluate your firearm (for free) and turn that condition into a payout, view our 3-step selling process for a guaranteed FFL offer.

Once you learn what condition your gun has, you can use this to estimate used Kel-Tec RDB prices:

Like-New or Mint

• The highest prices for secondhand guns
• Never used, never fired
• Perfect form and function

Excellent

• About 10% less than mint
• Rarely used, almost no wear
• Near-perfect form, perfect function

Very good

• About 20% less than mint
• Occasionally used, a little wear
• Mostly good form, perfect function

Good

• About 30% less than mint
• Used regularly but cared for
• Worn but not ugly, perfect function

Fair

• About 40% less than mint
• Used regularly and not cared for
• Worn and may be ugly, mostly intact function

Poor

• About 50% less than mint
• Very worn and may even be dented or rusted
• May not even work any longer

Value Factor 2: KelTec RDB Models or Variants

If you want to sell an RDB or buy one, model is a key factor in its pricing. Here are some of the models we see most often in the market.

KelTec RDB17 Value

The average used KelTec RDB17 is worth $300 to $600. A new KelTec RDB17 costs $650 to $750 at retail.

This is the original variant with the 17-inch barrel. A Zytel forend is paired with a Picatinny rail, 20-round capacity, and the famous ambidextrous design.

KelTec RDB20 Price

The average used KelTec RDB20 is worth $300 to $600. A new KelTec RDB20 costs $750 to $800 at retail.

This is essentially the same gun as the 17-inch version, just equipped with a longer 20.5-inch barrel. Other than that, virtually other features are the same.

KelTec RDBC Value

The average used KelTec RDBC is worth $275 to $500. A new KelTec RDBC costs around $600 at retail.

This is a California-compliant variant that’s designed for range use or civilian hunting activities. Because of the modifications to it, KelTec RDB-C value is often a little lower than the standard versions.

KelTec RDB Defender Value

The average used KelTec RDB Defender is worth $350 to $700. A new KelTec RDB Defender costs around $840 to $975 at retail.

KelTec RDB Defender value is higher because of the improvements that come from combining the standard RDB design with the RDB Survival’s. A 16-inch pencil profile barrel is combined with an aluminum M-LOK handguard, collapsible stock, and 6.7-pound weight.

This is a model that holds value well. Because it’s a premium firearm in the line, we use a secure gun shipping and buying system to ensure every transaction is fully insured and legally compliant.

KelTec RDB Hunter Value

The average used KelTec RDB Hunter is worth $300 to $600. A new KelTec RDB Hunter costs around $750 at retail.

The hunter drops the pistol grip and sports a swivel stud bipod mount as well as a 20-inch threaded barrel. Capacity is at 10 (though it fits any AR15 compatible magazine).

KelTec RDB Survival Value

The average used KelTec RDB Survival is worth $350 to $700. A new KelTec RDB Survival costs around $865 at retail.

KelTec RDB Survival value comes from its status as the smallest, lightest RDB option in KelTec’s stable. Just a bit over 5 lbs, it still has 20-round capacity and a 16-inch barrel.

How Accessories Affect What We Pay for Your RDB

If you want to sell a KelTec RDB, you’re probably wondering if you can boost its value with accessories. You can… sometimes.

Here are the rules for that:

• Only great-condition accessories usually add value.
• Only accessories made by known manufacturers usually add value.
• Most buyers will only want to pay for the gun itself, without modifications or extras.

Knowing that, you can try to add some accessories to your RDB to boost its value in resale. Just remember that not all buyers will bite – although you can always try us, as we often buy accessories.

Spare Magazines

The RDB generally ships with one mag, so most buyers will be interested in spares.

Value: Around $5 to $10 a mag.

KelTec RDB Aluminum Forend

A rigid and customizable replacement for the OEM polymer handguard on older models. Worth about $177.50 new.

Value: Around 20% to 50% of original value.

KelTec RDB 17 Flared Magwell

Great for speeding up reload times. KelTec sells these for about $50. Keep in mind that they only work with the RDB17, RDB20, and RDB Defender.

Value: Around 30% to 50% of original value.

The Process to Sell a KelTec RDB to Us

Selling a KelTec shouldn't be complicated. We provide a streamlined process that handles the heavy lifting for you.

• Step 1: Get an instant quote based on your gun’s specific model and condition.
• Step 2: Accept our offer and ship your gun with our prepaid label.
• Step 3: Get paid the same day we validate it.