Smith & Wesson Response Carbine | 9mm | 16.5″ | 10rd | 13978

The Smith & Wesson Response (model 13978) is a California-compliant pistol-caliber carbine chambered in 9mm with a 16.5-inch threaded barrel. It uses the FLEXMAG system to accept a range of double-stack 9mm pistol magazines and carries familiar MSR-style controls on a polymer receiver. For a versatile optic under $1,000, the Vortex Strike Eagle 1-6×24 pairs well with the Response for close-to-mid-range target work and practical training. This carbine is well-suited to range training and pistol-caliber carbine (PCC) competition.

Product Specifications

• The manufacturer is Smith & Wesson.
• The ATF model is RESPONSE.
• The manufacturer part number is 13978.
• The caliber is 9mm.
• The barrel measures 16.5 inches and is threaded with a thread protector.
• The muzzle thread pattern is 1/2×28.
• The action is Semi-Auto (blowback).
• The magazine capacity is 10 rounds (California-compliant).
• The upper and lower receiver are Polymer.
• The handguard uses M-LOK slots and has a Picatinny-style rail.
• The stock is a fixed synthetic stock.
• Included with the rifle are 2 magazines (10-round each).
• The rifling rate of twist is 1:10.
• The firearm ships with no sights and is optic-ready.
• The UPC is 022188896855.

The Response combines practical PCC ergonomics, broad magazine compatibility via the FlexMag system, and a threaded barrel for accessory options. Its polymer receiver and M-LOK handguard keep weight and modularity in balance for range use and competition settings.

Customers have praised the FLEXMAG adaptability and the familiar MSR-style controls for ease of transition and magazine compatibility.

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