The PTR Collapsible 4 Position Stock is a modular buttstock designed for shooters who need adjustable length of pull without compromising stability or durability. Built for AR-platform rifles, this collapsible stock lets you dial in the perfect fit whether you're shooting in heavy winter gear, light summer layers, or body armor—or simply prefer a shorter or longer pull for different shooting positions. The four discrete positions mean you get genuine adjustability, not infinite micro-adjustments that never feel quite locked in.

PTR Industries has built a solid reputation in the AR community for no-nonsense parts that work. This stock reflects that philosophy: it's engineered to be reliable under hard use, whether you're running a duty rifle, a hunting build, or a competition gun. The collapsible design also saves space in tight storage or vehicle carry, which matters when real estate is at a premium.

If you're building or upgrading an AR and need a stock that actually stays where you set it, the PTR Collapsible 4 Position Stock delivers the adjustability and dependability that working shooters demand.

Key Features

• Four fixed positions for precise length-of-pull adjustment
• Collapsible design for compact storage and transport
• Designed for AR-platform rifles
• Durable construction for field and range use

Frequently Asked Questions

Will this stock fit my rifle?

The PTR Collapsible 4 Position Stock is designed for AR-platform rifles. Confirm your rifle's receiver type before purchase.

How much does the stock collapse?

The stock offers four discrete positions for length-of-pull adjustment. Refer to the product specifications or contact Bosque Outdoors for exact collapsed and extended dimensions.

What's included?

The product includes the collapsible stock. Installation hardware or additional components should be verified at the time of purchase.