Aim Sports ARSTKCC Mil-Spec Black Synthetic 6-Position Collapsible M4 Stock for AR-Platform Rifles

The Aim Sports ARSTKCC mil-spec black synthetic 6-position collapsible M4 stock is a no-frills, battle-tested option for AR-platform rifles that need a reliable, adjustable buttstock without premium pricing. Built to mil-spec standards, this stock gives you six length-of-pull positions so you can dial in the fit whether you're running plate carrier, light jacket, or bare shirt—critical for consistent shooting and equipment compatibility across different loadouts. The synthetic construction keeps weight down and stands up to field use without the maintenance demands of some alternatives.

This is the stock for shooters who value function over flash: working gun builders, budget-conscious hunters, range competitors, and anyone running a modern AR who needs adjustability without overthinking it. Six positions mean you'll find a comfortable, repeatable shoulder position for prone, bench, standing, or tactical conditions.

Aim Sports builds to mil-spec, so compatibility with standard AR-platform receivers is straightforward. Drop it in and go to work.

Key Features

• Mil-spec construction for proven AR-platform reliability
• Six adjustable length-of-pull positions for fit across different body armor, clothing, and shooting positions
• Black synthetic material—durable, low-maintenance, lightweight
• M4-pattern design fits standard AR receivers

Specifications

Frequently Asked Questions

Will this stock fit my AR-15 or AR-10?

The Aim Sports ARSTKCC is designed for AR-platform rifles and is mil-spec compatible with standard receivers. Verify your rifle uses a mil-spec receiver if you're unsure, but this stock is built for the vast majority of modern AR-platform builds.

What's the benefit of six adjustment positions?

Six length-of-pull settings let you dial the stock to your body size and loadout. Whether you're shooting in shirtsleeves, with body armor, or in cold weather layers, you can find a consistent, repeatable shoulder position for accuracy and control.

Is this stock easy to install?

Yes—the ARSTKCC is a direct mil-spec fit for standard AR receivers. If your rifle has a mil-spec buffer tube, installation is straightforward. If you're unsure about your rifle's specs, we're here to help.