| Feature | Traditional FRT | Binary Trigger | Super Safety / FRS |
|---|---|---|---|
| How it works | Replaces entire trigger group; hammer forces reset | Replaces trigger group; fires on pull AND release | Modifies safety selector; BCG cycling forces reset |
| Trigger compatibility | Must use included trigger | Must use included trigger | Works with mil-spec and quality triggers (Geissele, LaRue, etc.) |
| Wear pattern | Accelerated hammer/trigger wear | Standard wear on included trigger | Minimal wear, leverages selector mechanism |
| Safety consideration | Requires trigger discipline for rapid reset | Risk of unintended discharge on trigger release | Deliberate trigger pull required for each shot |
| Lower receiver requirement | Works with most lowers | Works with most lowers | M16 pocket or low shelf preferred; high shelf may need modification |
| Installation | Replace entire fire control group | Replace entire fire control group | Replace safety selector only (minutes) |
Looking for an FRT (Forced Reset Trigger) or binary trigger alternative? The Super Safety (also called a Forced Reset Selector or FRS) offers a smarter approach to rapid-fire capability for AR-15s. Unlike traditional FRTs or binary triggers that replace your entire trigger group, a Super Safety modifies only the safety selector—letting you keep your premium trigger (like a Geissele SSA-E or LaRue MBT) while adding forced reset functionality. This guide covers everything: how they work, the critical advantage over FRTs and binary triggers, lower receiver compatibility, installation, tuning, and includes a ROF calculator for measuring your burst RPM.
As of late 2025, forced reset devices, including Super Safeties, are generally considered legal under federal law following court rulings against ATF classifications of similar devices as machine guns (e.g., the Rare Breed FRT case and bump stock precedents). However, laws vary by state and can change. Always verify compliance with federal, state, and local regulations before purchasing or installing. Some states restrict rapid-fire devices.
This guide assumes familiarity with these topics:
If you're coming from research on FRTs (Forced Reset Triggers) like the Rare Breed FRT-15, WOT (Wide Open Trigger), or binary triggers, here's why the Super Safety approach is worth considering.
With a Super Safety, you can run a Geissele SSA-E, LaRue MBT-2S, or any quality mil-spec trigger in normal semi-auto mode with all the benefits of a crisp, light pull—then flip to the forced reset position when you want rapid fire. Traditional FRTs and binary triggers lock you into their included trigger with no option for a premium fire control experience. Plus, super safeties avoid the unintended discharge risk that comes with binary triggers firing on release.
In standard semi-auto mode, you must fully release the trigger for it to reset after each shot. A Super Safety changes this in its forced reset position.
This differs from traditional FRTs, which often use the hammer to force the reset and can accelerate wear. Super Safeties leverage mechanical advantage from the selector, preserving rifle longevity and allowing use with quality triggers.
Super Safeties offer several advantages over traditional forced reset triggers and provide unique benefits for rapid-fire applications.
Run Geissele, LaRue, ALG, or any quality trigger—get the best of both worlds: precision when needed, rapid fire when wanted.
Enables high rates of fire for competition, training, or recreational shooting.
Unlike FRTs that stress the hammer/trigger interface, the super safety design minimizes wear on fire control parts.
Many models offer true 3-position selectors (Safe/Semi/Forced Reset), allowing easy switching between normal and rapid-fire modes.
Works with your existing mil-spec or aftermarket trigger—no need to replace the entire fire control group.
Models like the Atrius provide levers on both sides for left- or right-handed use.
High-quality forced reset selectors that enhance rapid-fire capability while maintaining semi-automatic functionality.
A robust, drop-in ambidextrous selector made from heat-treated 4140 steel. Features crisp 90-degree throws, ergonomic levers, and compatibility with mil-spec AR-15s in .223/5.56/.300 BLK.
A durable 3-position selector offering Safe, Semi, and Forced Reset modes. Engineered for reliability and rapid performance with standard mil-spec components.
Purchasing through these links may generate a commission at no extra cost to you. Always verify compliance with federal, state, and local regulations before purchasing or installing. Some states restrict rapid-fire devices.
Installation is similar to replacing a standard safety selector and typically takes minutes for those familiar with AR-15 disassembly. Always unload the firearm and ensure it's clear before working.
M16 pocket and low shelf lowers are drop-in compatible with most super safeties. High shelf receivers (e.g., some Colt, LMT MARS L, Springfield) may require minor material removal for the cam lever to move freely. Use a Dremel cautiously if needed. Consult manufacturer videos or guides for your specific model. Professional installation is recommended if you're unsure.
To achieve reliable performance with your Super Safety, proper tuning is essential.
Use at least an H2 (or heavier) buffer to ensure consistent cycling. Heavier buffers help with reset timing.
Some users clip 1-2 coils from the safety detent spring for smoother selector feel.
Certain kits need a small angle filed on the trigger tail for optimal cam engagement—follow kit instructions precisely.
Start with slow fire to tune. Charge the rifle manually while holding the trigger to feel the reset action.
Apply quality lube to moving parts for smoothness.
Quality two-stage triggers (Geissele SSA, LaRue MBT-2S) pair exceptionally well—the defined wall helps control rapid fire.
Common issues like binding often stem from fitment or light buffers—address these for "sewing machine" reliability. If running a premium trigger like an SSA-E, the improved reset feel can actually make controlling rapid fire easier.
Measure your burst RPM, shot spacing, and timing from audio or video clips. Great for analyzing your super safety performance or comparing different setups.
This ROF calculator estimates shot timing, burst structure, and rounds per minute. Processing stays local to your browser.
Media input
WAV, MP3, M4A, or MP4 with a readable audio track.
Processing pipeline
Detection parameters
Achieve reliable forced reset operation with the right buffer weight and tuning components. Heavier buffers ensure consistent cycling.
An H2 or heavier buffer helps ensure consistent cycling and proper reset timing with forced reset selectors.
Fine-tune your gas system for consistent bolt carrier cycling, especially important for forced reset devices.
Purchasing through these links may generate a commission at no extra cost to you. Follow manufacturer tuning recommendations for best results.
A Super Safety can transform your AR-15 into a high-performance platform for fun and skill-building, but requires responsible handling.
The rapid-fire capability of forced reset devices requires exceptional trigger discipline and safe handling practices at all times. Only use at appropriate ranges with proper backstops and supervision.
Common questions about super safeties and FRT alternatives.
No. While both enable rapid semi-automatic fire, they work differently. An FRT (Forced Reset Trigger) replaces your entire trigger group and uses hammer energy to force the reset. A Super Safety (Forced Reset Selector) only replaces the safety selector and uses BCG cycling to force reset—letting you keep your existing trigger.
Binary triggers fire one round on trigger pull AND one on trigger release, doubling your rate of fire. However, they replace your entire trigger group and can cause unintended discharges if you release the trigger when you don't mean to fire. Super safeties only replace the safety selector, work with premium triggers like Geissele, and require deliberate trigger pulls for each shot—making them safer and more controllable while still enabling rapid fire.
Yes! This is one of the biggest advantages over traditional FRTs. Super safeties work with quality mil-spec triggers like the Geissele SSA, SSA-E, LaRue MBT-2S, ALG ACT, and others. You get the premium trigger experience in semi-auto mode and rapid fire when you flip to the forced reset position.
M16 pocket lowers are ideal (no modification needed). Low shelf lowers work with most super safeties with little to no fitting. High shelf lowers may require material removal or may not work at all. Use our compatibility checker above to see if your brand is likely compatible.
As of late 2025, forced reset devices including super safeties are generally considered legal under federal law following court rulings. However, state and local laws vary. Always verify compliance in your jurisdiction before purchasing.
Most super safeties require at least an H2 buffer for reliable operation. Heavier buffers (H3, Sprinco) can improve timing and reliability. Check our gas system and buffer tuning guide for more details.
The fire control pocket shape determines super safety compatibility. The diagram below shows a cross-section view looking into the pocket from the rear.
Best compatibility. Thin walls all the way up—no shelf. Full clearance for super safety cam lever.
Usually compatible. Shelf sits just above safety hole centerline. Most super safeties work with minimal fitting.
May need modification. Shelf sits above safety hole. Material removal often required—may not fit at all.
Ready to continue? Here's the recommended next guide:
Select the best AR-15 trigger for your build. Compare single-stage, two-stage, match, and competition triggers with pull-weight guidance, reliability notes, and brand recommendations.
Or explore a related topic:
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