The KelTec RDB 5.56 bullpup rifle is a downward-ejecting rifle with a 20-inch barrel, finished in black and supplied with a 20-round magazine (brand part no. RDB20BLK). KelTec designed it so that spent casings fall out below the rifle and out of the shooter’s line of sight. The controls are fully ambidextrous. It accepts AR-15 style magazines. It is a rifle for range work, competition and defense for left- and right-handed shooters alike.

Key Specifications

• Caliber is 5.56 NATO, widely available and economical.
• Barrel length is 20 inches, long for velocity inside a bullpup frame.
• The barrel has a 1:7 twist, a rate KelTec uses across its RDB models.
• The rifle includes a 20-round magazine and accepts AR-15 style magazines.
• Ejection is downward, so casings leave below the rifle, and the controls are fully ambidextrous.
• The receiver has two integral MIL-STD-1913 Picatinny rails, above the barrel and along the handguard.
• The adjustable gas piston system lets the shooter tune the bolt carrier speed for suppressors and different loads.

Frequently Asked Questions

Is the RDB ambidextrous? Yes. It ejects downward and has fully ambidextrous controls, so it works for left- and right-handed shooters.

What magazines does it take? It comes with a 20-round magazine and accepts AR-15 style magazines.

Can I mount an optic? Yes. It has two integral MIL-STD-1913 Picatinny rails.

Buy the KelTec RDB Bullpup 5.56 Rifle, 20-Inch Barrel, Black, 20-Round

Bullpups put a long barrel in a short rifle, and the RDB adds downward ejection that works for any shooter. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and browse more semi-auto rifles while you are here.