The BS Squirts ARSS15 is a four-part drop-in forced reset device system designed for AR-15 platforms. It delivers high semi-automatic rates of fire (typically 700–900 RPM) while maintaining full mechanical semi-auto functionality through a return-to-battery lockout.

It requires no permanent modifications to the lower receiver and works with most standard mil-spec triggers and full-auto profile bolt carriers.

This guide covers how it works, compatibility, supporting parts, and troubleshooting. It is not legal advice. Always verify federal, state, and local laws before purchasing or using any rate-enhancing device.

View the product here: BS Squirts ARSS15 Drop In Forced Reset Device™ Kit.

What Is the BS Squirts ARSS15?

The ARSS15 is a drop-in system made from high-quality steel and aluminum parts. It installs in seconds and uses a mechanical lockout that forces the trigger to reset only after the bolt fully locks into battery. This keeps the system semi-automatic — one function of the trigger per round.

The kit typically includes anti-walk pins, a trigger-specific safety lever, and a curved trigger kit.

How Does the ARSS15 Work?

1. You pull the trigger → one round fires.
2. The BCG cycles.
3. A mechanical lockout prevents the trigger from being pulled again until the bolt is fully locked.
4. Once locked, the system forces the trigger forward into the reset position.
5. You pull the trigger again for the next shot.

The return-to-battery lockout is what keeps the device legal as a semi-automatic system under current federal interpretations.

Compatibility Requirements

• Full-auto profile (M16) BCG: Required. Browse our M16 Bolt Carrier Groups.
• Recommended buffer: H3 - M16 Full Auto Slide Dead Blow Buffer - GEN2 or KYNSHOT Hydraulic AR15 H3 Buffer - RB5000HP.
• Anti-walk pins: Included in most kits; extras available in our Anti-Walk Pins category.
• Low-shelf lower preferred: Our Myth Industries Billet AR-15 Lower is a good match.

ARSS15 in a .300 Blackout Build

• Buffer: Kynshot AR15 Hydraulic Buffer (RB5000HP)
• BCG: KAK DBC Bolt Carrier Group
• Gas: Adjustable gas block recommended for tuning

ARSS15 in a 9MM / AR-9 Build

See our AR-9 Installation Guide.

• Use the PREMIUM Forced Reset Device™ CUT 9MM Bolt Carrier Group
• Pair with the Kynshot AR9 Hydraulic Buffer (RB5007)

A dedicated 9MM kit is also available that includes the cut BCG and hydraulic buffer.

Installation Overview

1. Clear the firearm and separate the receivers.
2. Remove the existing safety selector.
3. Install the ARSS15 components per the included instructions (typically under 5–10 minutes).
4. Install anti-walk pins.
5. Function check in all positions, then test fire with the correct buffer and BCG.

Common Issues

No reset or dead trigger: Buffer too light. Switch to the H3 GEN2.

Light strikes: Bolt bounce. Use the H3 GEN2 or Kynshot hydraulic buffer.

Failure to lock out properly: Verify full-auto BCG and that the bolt is fully locking into battery.

Final Thoughts

The BS Squirts ARSS15 is one of the faster-installing drop-in options available. Its return-to-battery lockout is a key feature for consistent semi-automatic function. Pair it with the H3 GEN2 Slide Dead Blow Buffer and a proper M16-profile BCG for best results.

Disclaimer: This article is for informational purposes only and does not constitute legal advice. Firearm laws change frequently. Verify all applicable federal, state, and local regulations before purchasing or using any Forced Reset Device. Always follow safe firearm handling practices.