AS Designs
AS Designs Arc-Fire V2 Ambi Kit (0-90-180)
Second-generation Arc-Fire FRS with reduced drag and traditional 0/90/180 ambidextrous throw
Quick Specs
- Price
- $200
- Weight
- 0.6 oz
- Brand
- AS Designs
- Category
- safety-selector
Features
- •0/90/180 throw
- •Ambidextrous
- •Reduced drag V2 internals
- •Active Reset Clutch
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AS Designs Arc-Fire V2 Ambi Kit, 0-90-180, Black, ARCFIRE-AMBI-V2-0-90-180
Compatibility Tags
Overview
The AS Designs Arc-Fire V2 Ambi Kit (0-90-180) is the second-generation version of the Arc-Fire forced reset selector, revealed at SHOT Show 2026 and shipping March 2026. This variant retains the traditional 0-degree safe, 90-degree semi, and 180-degree ARC throw pattern of the V1 while adding V2's internal refinements: smoother cam geometry, reduced system drag, and an updated Active Reset Clutch mechanism that cycles more cleanly during sustained rapid fire. The 180-degree throw to ARC is deliberate - it requires a committed, unambiguous motion to engage forced reset, which some shooters prefer over shorter throws.
Like every Arc-Fire, the V2 is a forced reset selector (FRS), not a complete forced reset trigger (FRT). It replaces the safety selector system and ships with a pre-cut trigger, while your hammer, springs, and disconnector remain in the host fire control group. Compatible triggers are best treated as Mil-Spec or super-safety-cut configurations rather than plain uncut premium triggers. The Arc-Fire is not compatible with LaRue MBT-2S, CMC Single Stage, or Rise Armament RA-140 triggers.
The V2 platform supports AR-15 and 10+ other systems with the appropriate Slip Trip Kit, including MCX, MPX, MP5, SCAR, BRN-180, JAKL, G3, AP53, UMP, STRIBOG, and DISSENT. Ambidextrous levers ship with the kit for left- or right-handed configuration. The selector uses 4140 steel with black oxide finish, and the ARC components are M2 tool steel with DLC coating for wear resistance. The Arc-Fire V2 is also offered in 0-45-90 and 0-45-180 throw configurations, plus a non-ambidextrous variant, so shooters can match selector travel to platform and preference. Forced reset selectors are federally legal following the May 2025 DOJ settlement; AS Designs does not ship to CA, CO, CT, DE, FL, HI, IL, MA, MD, MN, NJ, NV, NY, OR, or RI.
Key Features
- V2 reduced-drag internals for smoother ARC cycling vs V1
- Traditional 0° Safe / 90° Semi / 180° ARC three-position throw
- Fully ambidextrous kit with left- and right-side levers
- Active Reset Clutch system forces trigger reset through selector
- Works with Mil-Spec and compatible super-safety-cut trigger groups
- 10+ platform support with appropriate Slip Trip Kit (AR-15, MCX, MPX, MP5, SCAR, BRN-180, JAKL)
- 4140 steel selector with black oxide, M2 tool steel DLC-coated ARC components
- Drop-in installation on AR-15 (Slip Trip Kit required for non-AR platforms)
Pros
- +Keep your existing quality trigger for semi-auto work
- +V2 internals cycle smoother than V1 with reduced drag
- +Traditional 180-degree throw to ARC is deliberate and unambiguous
- +Multi-platform support has no real competition in the FRS space
- +Ambidextrous out of the box
- +Tool steel ARC components with DLC coating for durability
Cons
- −Premium pricing versus conventional safety selectors
- −180-degree throw is slower than 45/90 variants for shooters who want a shorter sweep
- −Non-AR platforms require the separately-sold Slip Trip Kit
- −MCX platform requires removing the firing pin safety latch for reliable function
- −AS Designs blocks shipping to 15 restricted states plus DC
- −Incompatible with LaRue MBT-2S, CMC Single Stage, Rise Armament RA-140
Setup & Operation
Step-by-step procedures for setting up, operating, and maintaining the AS Designs Arc-Fire V2 Ambi Kit (0-90-180).
What Ships in the V2 Kit and What You Supply
The Arc-Fire V2 0-90-180 kit ships as a selector system: an M2 tool steel ARC V2 cam, an M2 tool steel ARC V2 lever, an M2 tool steel ARC V2 detent bar, a 4140 steel primary selector, ambidextrous selector levers, a KNS safety detent, and a pre-cut trigger machined to Hoffman Tactical specs. The cam, lever, and detent bar carry DLC coating; the selector levers are black oxide. You reuse your existing hammer, hammer spring, trigger spring, disconnector, and disconnector spring.
You supply a 1/8-inch punch, a grip screwdriver, a bench block, and an H2 or H3 carbine buffer. For reliable V2 function AS Designs documents an M16-cut bolt carrier group and a heavier buffer. A standard carbine buffer with a semi-cut carrier is the most common source of light strikes and hammer follow on a fresh install.
- • 1/8-inch (3.5 mm) punch
- • Grip screwdriver (slotted or hex, grip-dependent)
- • Bench block or padded work surface
- • H2 or H3 carbine buffer
- • Eye protection
The Arc-Fire V2 is a forced reset selector, not a forced reset trigger. It replaces the safety selector and works with most mil-spec triggers and Geissele super safety cut triggers. It is not compatible with the LaRue MBT-2S, CMC Single Stage, or Rise Armament RA-140.
Install the Arc-Fire V2 Selector and Cam
The V2 install follows the same sequence as the original Arc-Fire: fit the pre-cut trigger, time the ARC cam against the trigger group, and replace the selector. It is not a drop-in part. Work over a bench block on a cleared rifle with the upper separated from the lower.
Two orientation rules decide whether the install works. The transfer lever tip must point away from the hammer and toward the rear of the lower. The V2 cam must seat with its reset groove facing down, closest to the transfer lever. An incorrectly oriented cam will not force reset and can cause malfunctions.
- • 1/8-inch punch
- • Grip screwdriver
- • Bench block
- 01
Clear the rifle and separate the receivers
Drop the magazine, lock the bolt to the rear, and confirm an empty chamber both visually and physically. Push out both takedown pins and lift the upper away. The Arc-Fire V2 installs entirely in the lower.
- 02
Fit the pre-cut trigger
Remove your stock trigger shoe and install the pre-cut trigger from the kit, machined to Hoffman Tactical specs. Reuse the original trigger spring, disconnector, and disconnector spring. Seat the trigger pin with light thumb pressure rather than forcing it.
- 03
Reinstall the hammer cocked
Reinstall the hammer and hammer spring, then cock the hammer rearward before continuing. The cam will not time correctly against an uncocked hammer.
- 04
Run the detent bar through the transfer lever
Attach the ambidextrous selector to the V2 detent bar, then push the detent bar through the right side of the lower and through the transfer lever. The transfer lever tip must point away from the hammer and toward the rear of the receiver.
- 05
Set the selector to semi and fit the grip
Rotate the selector to the 90-degree semi position, then install the KNS safety detent and the pistol grip with its detent spring. Confirm every selector position clicks crisply before moving on.
- 06
Install the ARC V2 cam groove-down
Install the V2 cam with its reset groove facing down, closest to the transfer lever. This is the critical step. An upside-down or mis-oriented cam will not force reset and can cause malfunctions.
- 07
Install the primary selector and final screw
Install the primary selector matching the position of the ambidextrous selector, semi preferred, then thread the remaining selector screw to firm hand-tight. Do not over-torque.
- 08
Function check with the transfer lever forward
Reassemble the rifle and function check while keeping the transfer lever forward. Confirm safe at 0 degrees blocks the trigger, semi at 90 degrees fires one round per pull, and ARC at 180 degrees forces a single clean reset. Dry-fire through every mode before live fire.
If you see light primer strikes or hammer follow on first use, run an M16-cut bolt carrier group and step the buffer to H2, then H3 if symptoms remain. Stop live fire until the rifle cycles clean through every mode.
How the 0-90-180 Three-Position Throw Works
The V2 0-90-180 variant uses the traditional throw pattern. Safe sits at 0 degrees and blocks the trigger like a standard mil-spec safety. Semi sits at 90 degrees and is ordinary semi-automatic fire, one round per deliberate trigger press, using your existing trigger's pull weight and break. ARC sits at 180 degrees, a full sweep from safe.
The 180-degree throw to ARC is deliberate. It requires a committed, unambiguous selector motion to engage forced reset, which is harder to bump into accidentally than a shorter throw. In ARC mode the Active Reset Clutch uses the bolt carrier's rearward travel to push the trigger forward after each shot, resetting it against your finger faster than a manual release. Each round still requires its own distinct trigger pull.
ARC is a reset mechanism, not an auto-fire mechanism. Every shot requires a separate trigger pull; the clutch only makes the reset faster and more consistent. AS Designs also offers 0-45-90 and 0-45-180 throw variants for shooters who want a shorter sweep to ARC.
Detailed Specifications
- partNumber
- ARCFIRE-AMBI-V2-0-90-180
- Material
- 4140 Steel (selector), M2 tool steel DLC (ARC components)
- finish
- Black oxide (selector), DLC (ARC)
- throw
- 0° / 90° / 180° (Safe / Semi / ARC)
- positions
- 3-position
- hand
- Ambidextrous (left and right levers included)
- weight
- 0.6 oz
- compatibility
- AR-15 native; MCX, MPX, MP5, SCAR, BRN-180, JAKL, G3, AP53, UMP, STRIBOG, DISSENT via Slip Trip Kit
- triggerCompatibility
- Mil-Spec and compatible super-safety-cut trigger groups; verify current AS Designs fitment before purchase
- incompatibleTriggers
- LaRue MBT-2S, CMC Single Stage, Rise Armament RA-140
- installation
- Drop-in on AR-15; Slip Trip Kit required for other platforms
- madeIn
- USA
- msrp
- $250
- colors
- Black
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