KELTEC RDB - The RDB Defender is the result of taking the RDB and the

Price History
KELTEC RDB - The RDB Defender is the result of taking the RDB and the

UPC 640832008081 from 71 retailers

  • 5.56x45mm
  • KelTec
Shipping:
KELTEC RDB - Defender 5.56 NATO - Excellent Condition This KelTec RDB Defender chambered in 5.56 NATO / .223 Remington is in excellent, lightly used condition with an estimated fewer than 35 rounds fired. It remains exceptionally clean and has been professionally inspect...
.223 Remington Used
Shipping $24.40
$609.99 Guns.com ★★★★★ (38,455)
Kel-Tec RDB Defender 5.56 NATO Semi-Auto Rifle
$744.99 Good 4 Guns ★★★★★ (276)

UPC 640832008081 Price Graph

Today's low is $609.99, 15% below the 180-day average low of $721.05. Over the last 180 days, the lowest price peaked at $786.99 on June 30, 2026 and bottomed at $609.99 on September 5, 2026.

Kel-Tec RDB Defender Rifle 5.56mm 20rd Magazine 16" Barrel Black Finish
Free Shipping
$761.99 Cummings Family Firearms ★★★★★ (52)
KELTEC RDB DEFENDER 5.56 BL/BLK 16"
CC Fee 3%
$761.99 Cornerstone Arms ★★★★★ (373)
RDB Defender 16in BARREL BLACK FINISH - 20RD MAGAZINE
Add to Cart for Price
$764.26 Gun Wise
KelTec RDB Defender, 5.56 NATO / .223 Rem, 16" Barrel, 20 Capacity, Black Rifle
Shipping $24.10
$765.83 Deerford Defense
RDB Defender 16in BARREL BLACK FINISH - 20RD MAGAZINE
Defender
Add to Cart for Price Shipping $20
$769.13 DK Gun & Dog ★★★★★ (56)
KEL-TEC RDB DEFENDER 5.56MM - 16.1" 20RD M-LOK BLACK
CC Fee 6%
$769.91 All Things Firearm ★★★★★ (3)
Kel-Tec RDB Defender Semi-Automatic Bullpup Rifle 16" Barrel .223/5.56NATO 20rd - RDBDBLK
Shipping $18
$789.99 Classic Firearms ★★★★★ (2,454)
KelTec RDB Defender 5.56 NATO 16 in. Black 20 rd.
$794.40 Ecommerce Arms

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Kel-Tec RDB Defender 5.56 NATO 16.1" Black
$794.56 Georgia Guns & Ammo ★★★★★ (2)
KelTec RDB Defender 5.56 NATO 16 in. Black 20 rd.
Free Shipping > $900 CC Fee 3% $10 Off Code CALIBERKING
$797.52 Armed in Michigan ★★★★★ (714)
KELTEC RDB DEFENDER 5.56 BL/BLK 16"
$801.99 Get Guns N Ammo
KELTEC RDB-D 5.56MM 16.1" 20RD BLK
Free Shipping
$802.67 Caliber Exchange ★★★★★ (1)
Kel-Tec RDBDBLK RDB Defender 5.56x45mm NATO 20+1 16.10" Black Pencil Profile Barrel, Black Polymer Receiver, Black Synthetic Collapsible Stock, Black Polymer Grip
$803.00 CLB Guns ★★★★★ (45)
KELTEC RDB-D 5.56MM 16.1" 20RD BLK
Shipping $20
$807.29 Down Range Firearms ★★★★★ (8)
Kel-Tec RDB Defender 5.56 NATO 16.1" 20rd Black
$807.29 Ferrari Firearms
Kel-Tec RDBDBLK RDB Defender 223 Rem,5.56x45mm NATO 16.10" 20+1 Black Collapsible Stock Black Polymer Grip
$807.79 De Leon RX & Sporting Goods ★★★★★ (216)
RDB Defender 5.56 16.1" Black 20rd
$809.00 Armored Boar Gunworks ★★★★★ (53)
KEL-TEC RDB DEFENDER 5.56MM - 16.1" 20RD M-LOK BLACK
Free Shipping
$811.03 Riddle Firearms
Kel-Tec RDBDBLK RDB Defender Downward Ejecting Bullpup Semi-Auto 5.56x45mm 16.1" 20+1 Black
$811.03 MCM Tactical ★★★★★ (60)
KelTec RDB Defender 5.56 NATO 16.1" 20rd
Free Shipping
$813.04 Axolotl Arms ★★★★★ (126)
KEL-TEC RDB DEFENDER 5.56MM - 16.1" 20RD M-LOK BLACK
Free Shipping
$814.04 Safe Haven Defense
KEL-TEC RDB DEFENDER 5.56MM - 16.1" 20RD M-LOK BLACK
Free Shipping
$820.43 Timber Hole Outdoors ★★★★★ (5)
KEL-TEC RDB DEFENDER 5.56MM - 16.1" 20RD M-LOK BLACK
$820.94 The Arsenal Project ★★★★★ (16)
Kel-Tec RDBDBLK RDB Defender 5.56x45mm NATO 20+1 16.10" Black Pencil Profile Barrel, Black Polymer Receiver, Black Synthetic Collapsible Stock, Black Polymer Grip
$5 Off - Use Code CALIBERKING
$821.54 Gun Place ★★★★★ (206)
KELTEC RDB DEFENDER 5.56 BL/BLK 16"
Shipping $20
$822.24 Custom Creatives Group ★★★★★ (24)
KELTEC RDB DEFENDER 5.56 BL/BLK 16"
$822.24 Pickett's Mill Armory ★★★★★ (26)
KELTEC RDB DEFENDER 5.56 BL/BLK 16"
$822.24 Vital Defense ★★★★★ (14)
KelTec RDB Defender 5.56 NATO 16.1 in 20 Rounds Black Finish
Free Shipping
$824.13 Shooting Surplus ★★★★★ (193)
KELTEC RDB-D 5.56MM 16.1" 20RD BLK
Shipping $15
$831.12 AZ Arms Depot ★★★★★ (229)
Kel-Tec RDB Defender 5.56 NATO 16.1in Bullpup Rifle Black 20rd
Shipping $10
$834.99 Alexander's Store ★★★★★ (1,532)
Kel-Tec RDBDBLK RDB Defender 5.56x45mm NATO 20+1 16.10" Black Pencil Profile Barrel, Black Polymer Receiver, Black Synthetic Collapsible Stock, Black Polymer Grip
Shipping $18
$837.19 Sharp's Shooting Supply ★★★★★ (34)
KELTEC RDB DEFENDER 5.56 BL/BLK 16"
Shipping $16
$838.99 Riflenetics ★★★★★ (65)
Kel-Tec RDBDBLK RDB Defender 5.56x45mm NATO 20+1 16.10" Black Pencil Profile Barrel, Black Polymer Receiver, Black Synthetic Collapsible Stock, Black Polymer Grip
Free Shipping
$839.99 Canoe Creek Armory ★★★★★ (17)
KELTEC RDB DEFENDER 5.56 BL/BLK 16"
$841.00 Birmingham Hill Armory ★★★★★ (16)
KELTEC RDB - The RDB Defender is the result of taking the RDB and the RDB Survival and mashing them up to forge the perfect 5.56 lightduty tactical bullpup. Its lightweight comes standard with an aluminum MLOK handguard collapsable stock and 16 pencil profile barrel. Defen...
Shipping $20
$846.99 Guns.com ★★★★★ (38,455)
RDB Defender 5.56 16.1" Black 20rd
$850.00 Allied Arms ★★★★★ (310)
KELTEC RDB DEFENDER 5.56 BL/BLK 16"
Free Shipping > $1,000 CC Fee 3%
$853.70 Bunker Hill Ballistics ★★★★★ (9)
KELTEC RDB-D 5.56MM 16.1" 20RD BLK
Shipping $20 Free Shipping > $1,000
$856.56 Dave's Guns ★★★★★ (28)
KELTEC RDB DEFENDER 5.56 BL/BLK 16"
Shipping $20
$859.61 JB Armament ★★★★★ (126)
KELTEC RDB DEFENDER 5.56 BL/BLK 16"
$859.99 Big Bee Bee ★★★★★ (11)
KELTEC RDB-D 5.56MM 16.1" 20RD BLK
Free Shipping CC Fee 3%
$861.34 Minutemen Defense ★★★★★ (54)
Kel-Tec RDB Defender 5.56 NATO 16.1" 20rd Black
Shipping $15
$861.99 Extreme Products ★★★★★ (83)
Kel-Tec RDB Defender Semi Automatic Rifle 5.56x45mm NATO 16" Black Threaded Barrel Black Frame Black Bullpup Stock
Free Shipping
$862.99 Midway USA ★★★★★ (119)
Kel-Tec RDBDBLK RDB Defender 5.56x45mm NATO 20+1 16.10" Black Pencil Profile Barrel, Black Polymer Receiver, Black Synthetic Collapsible Stock, Black Polymer Grip
$865.00 Highland Arms ★★★★★ (49)
KELTEC RDB DEFENDER 5.56 BL/BLK 16"
Free Shipping $15 Off Orders Over $75 Code CALIBERKING
$870.99 Brickhouse Firearms
KELTEC RDB DEFENDER 5.56 BL/BLK 16"
$871.99 Precision Gunworks
KelTec RDB Defender 5.56 NATO 16 in. Black 20 rd.
$872.17 Tungsten Creek Tactical
KELTEC RDB DEFENDER 5.56 BL/BLK 16"
$877.99 2 If By Sea Tactical ★★★★★ (135)
Kel-Tec RDB Defender Rifle 5.56mm 20rd Magazine 16" Barrel Black Finish
Shipping $18
$882.04 Blackbox Ballistics ★★★★★ (2)
KEL-TEC RDB DEFENDER 5.56MM - 16.1" 20RD M-LOK BLACK
$886.00 EK Tactical ★★★★★ (10)
Kel-Tec RDBDBLK RDB Defender Downward Ejecting Bullpup Semi-Auto 5.56x45mm 16.1" 20+1 Black
Free Shipping
$886.96 Kinetic Armory ★★★★★ (3)
KELTEC RDB-D 5.56MM 16.1" 20RD BLK
$886.99 WTW Arms ★★★★★ (68)
KELTEC RDB DEFENDER 5.56 BL/BLK 16"
Free Shipping
$887.89 Lightning Strike Arms ★★★★★ (32)
KELTEC RDB-D 5.56MM 16.1" 20RD BLK
Shipping $25 $25 Off Orders Over $200 Code LOCKNLOAD25
$892.96 Scottsodg.com
Kel-Tec KEL RDB DEFENDER 5.56 BLK
Free Shipping
$894.99 BuyAGun ★★★★★ (3)
KELTEC RDB DEFENDER 5.56 BL/BLK 16"
$895.87 Redsand Tactical
KELTEC RDB DEFENDER 5.56 BL/BLK 16"
$896.99 Firearms Express
KELTEC RDB DEFENDER 5.56 BL/BLK 16"
$898.00 Third Shift
Kel-Tec RDB Defender Downward-Ejection Bullpup Rifle RDBDBLK, 5.56mm NATO, 16 in, Black Syn Stock, Black Finish, 20 Rd
$899.46 Able Ammo ★★★★★ (397)
KelTec RDB Defender 5.56 NATO 16 in. Black 20 rd.
Free Shipping
$900.99 Timberlake Firearms ★★★★★ (11)
KELTEC RDB DEFENDER 5.56 BL/BLK 16"
$901.99 Black Bayou Armory ★★★★★ (83)
Kel-Tec RDB Defender 640832008081 5.56 mm NATO
$908.99 C-ME Firearms
Kel-Tec RDBDBLK RDB Defender 5.56x45mm NATO 20+1 16.10" Black Pencil Profile Barrel, Black Polymer Receiver, Black Synthetic Collapsible Stock, Black Polymer Gr
Shipping $11
$911.99 Selway Armory ★★★★★ (186)
Kel-Tec RDB Defender 640832008081 5.56 mm NATO
$912.99 Denver Bullets ★★★★★ (95)
Kel-Tec RDBDBLK RDB Defender 5.56x45mm NATO 20+1 16.10" Black Pencil Profile Barrel, Black Polymer Receiver, Black Synthetic Collapsible Stock, Black Polymer Grip
Free Shipping
$936.57 Conkey's Outdoors ★★★★★ (175)
KELTEC RDB DEFENDER 5.56 BL/BLK 16"
$951.99 Coastal Firearms
Kel-Tec RDBDBLK RDB Defender 5.56x45mm NATO 20+1 16.10" Black Pencil Profile Barrel, Black Polymer Receiver, Black Synthetic Collapsible Stock, Black Polymer Grip
$954.54 Shiner Tactical ★★★★★ (6)
KEL-TEC RDB DEFENDER 5.56MM - 16.1" 20RD M-LOK BLACK
Free Shipping
$965.39 Freedom Firearms ★★★★★ (2)
Kel-Tec RDB Defender 5.56 NATO 16 Inch Black 20 Round
Shipping $16
$971.74 Caliber Depot ★★★★★ (6)
Kel-tec RDB Defender .223 Rem/5.56 AR-15 Rifle, Blk - RDBDBLK
$992.99 Palmetto State Armory ★★★★★ (1,164)

UPC 640832008081 Price Graph

Today's low is $609.99, 15% below the 180-day average low of $721.05. Over the last 180 days, the lowest price peaked at $786.99 on June 30, 2026 and bottomed at $609.99 on September 5, 2026.

Daily Deals Email

Products at their 90-day low price.

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