Sidewinder uses the FAB Cobra stock. If you're ordering a grip module, you'll need this to convert your pistol to a rifle / SBR. Sidewinder grip module NOT included at this price. This listing is ONLY for the stock and DOES NOT include a Sidewinder grip. ALL NFA RULES APPLY. FOLLOW ALL LOCAL, STATE AND FEDERAL LAWS.

Here's FAB's product description:

The new Cobra folding buttstock provide a quick deployment and flexibility of use.

Carry the handgun with the buttstock folded in most OWB holster, and deploy the stock within a fraction of a second.

The cobra is provided with four replaceable adapters, for use with Glock® GEN 2-5 G17 or G19 frame models.

• Quick installation, attaches instantly
• No handgun modification required
• Rapid deployment mechanism; extends easily from the folded position into a full length deployed buttstock
• Integrated Cheek Rest
• High traction rubber Butt-Pad
• Can be used with the Scorpus OWB holsters when in the folded position
• Replaceable adapters, fits both G17 & G19 frames in GEN 2-5
• Durable and light weight fiberglass reinforced polymer construction

Compatibility:

The Cobra stock will fit all of the following Glock models 17, 19, 19X, 22, 23, 24, 25, 31, 32, 34, 35, 45 / GEN 2 - 5

The Cobra stock G17 GEN4 adapter will also fit the IWI JERICHO Polymer full size models- PL, RPL, PSL

Specifications: