Is the SUB-SDP a rifle or a pistol?

It is a brace-equipped pistol built on Kel-Tec's folding sub platform.

Do I need an FFL to buy the SUB-SDP?

Yes. It is a complete firearm and ships to your local licensed FFL dealer for pickup and background check.

Does the SUB-SDP fold?

Yes. The Kel-Tec sub platform folds for compact storage and transport.

What magazines does the SUB-SDP use?

It feeds from common pistol magazines — confirm the accepted magazine type for your specific model.

Kel-Tec

Kel-Tec SUB-SDP 9mm Braced Pistol

Name: Kel-Tec SUB-SDP 9mm Braced Pistol
Brand: Kel-Tec
Price: 683.24 USD
Availability: InStock

MPNSUB-SDP CategoryHandguns

$899.00 $683.24

Quantity

✓ Free shipping over $99 ✓ Ships in 1–2 business days ✓ 30-day returns

Pros & cons

What works

Compact folding design
Soft-shooting, affordable 9mm
Feeds common pistol magazines
Lightweight and easy to stow

Trade-offs

Brace-equipped pistol — know your state and local rules
Optics and accessories sold separately

Colton Drayer's take

Selective-fire trigger pack compatibility · Auto sear timing and reset tuning · Reviewed 2026-08-14

Expert review

The SUB-SDP is all about compact convenience: a lightweight polymer build, a folding frame, and common-magazine feeding.

Blowback-simple and soft in 9mm, it's the kind of gun that's easy to shoot well and easy to live with.

Whether it's a backpack gun or a weekend plinker, its size-to-capability ratio is hard to beat.

Specs at a glance

Editorial diagram — measurements verified during testing.

About this product

New from Kel-Tec, the SUB-SDP is a folding 9mm braced pistol that feeds from common pistol magazines. The SUB-SDP is all about compact convenience: a lightweight polymer build, a folding frame, and common-magazine feeding.

Specifications

Brand	Kel-Tec
Model	SUB-SDP
Caliber	9mm Luger
Magazine	Common pistol magazines
Action	Blowback
Platform	Folding braced pistol
Frame	Lightweight polymer
Condition	New

Frequently asked questions

What caliber is the Kel-Tec SUB-SDP?: 9mm Luger.
Is the SUB-SDP a rifle or a pistol?: It is a brace-equipped pistol built on Kel-Tec's folding sub platform.
Do I need an FFL to buy the SUB-SDP?: Yes. It is a complete firearm and ships to your local licensed FFL dealer for pickup and background check.
Does the SUB-SDP fold?: Yes. The Kel-Tec sub platform folds for compact storage and transport.
What magazines does the SUB-SDP use?: It feeds from common pistol magazines — confirm the accepted magazine type for your specific model.

Sources & methodology. Editorial review and rating by Colton Drayer based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication. Last fact-checked 2026-08-14.