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Kel-Tec RDB Bullpup 5.56 NATO Black Rifle

The Kel-Tec RDB is a compact 5.56 NATO bullpup rifle designed for balanced handling and ambidextrous operation. Its distinctive downward-ejection system directs spent cases away from the shooter’s line of sight, while fully ambidextrous controls support use from either shoulder. The 20.5-inch barrel delivers a full-length rifle configuration without sacrificing the compact handling advantages of the bullpup layout. Integral MIL-STD-1913 Picatinny rails provide space for optics and accessories, and the rifle accepts widely available AR-15 pattern magazines. This configuration includes one 20-round magazine. A scope is not included.

Key features

  • Bullpup configuration keeps the rifle compact while preserving a 20.5-inch barrel
  • Downward ejection supports comfortable operation from either shoulder
  • Fully ambidextrous controls and manual safety accommodate left- and right-handed users
  • Integral MIL-STD-1913 Picatinny rails support optic and accessory installation
  • Compatible with AR-15 pattern magazines
  • Includes one 20-round magazine

The Kel-Tec RDB combines compact bullpup handling, ambidextrous operation, and common AR-15 magazine compatibility in a practical 5.56 NATO rifle.

Kel-Tec RDB Bullpup 5.56 NATO Black Rifle: quick facts

What caliber is the Kel-Tec RDB Bullpup 5.56 NATO Black Rifle?
It is chambered in 5.56 NATO.
How many rounds does it hold?
20+1 rounds; magazines included: 1.
How big and heavy is it?
Barrel length 20.5 inches, overall length 27.75 inches, weight 7.7 pounds.
What kind of action does it use?
Semi-Automatic.
Is it optic ready or threaded?
Optic ready: Yes; threaded barrel: Yes.
What sights and finish does it have?
Sights: Standard Sights; finish: Black.
Is it new or used?
New, in the original packaging.
Can I buy it in Maine?
Yes. It ships to a licensed FFL dealer in Maine; you pick it up there after the background check. Maine buyers pick this up at a licensed dealer after a background check and the state's 72-hour waiting period where it applies. Check the rules for your Wildlife Management District before you hunt.
Is it in stock?
Yes, at $952.19. Orders leave within 1-2 business days; shipping is free over $999.

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