Is it compatible with a Geissele Maritime Bolt Catch?

Yes, it is compatible with the Geissele Maritime Bolt Catch, as confirmed in our technical analysis. No clearance or timing issues have been documented when both components are installed to manufacturer specifications. Refer to the full report: FRT Binary Trigger Compatibility with the Geissele Maritime Bolt Catch: A Mechanical Analysis.

Does it fit in a Polymer80 AR-15 lower?

Compatibility depends on the specific Polymer80 lower's fire control group pocket dimensions. Installation requires the pocket to meet or exceed mil-spec width and depth tolerances of 0.860 inches and 0.394 inches, respectively. We recommend measuring your receiver and consulting the machining tolerance framework guide before purchase.

How long does shipping take?

Shipping for in-stock items typically takes 3-5 business days for domestic delivery via USPS Priority Mail. Processing time is 1-2 business days from order verification. International orders are subject to carrier-specific transit times and applicable customs procedures.

Can I return it if it doesn't fit?

Returns are accepted within 14 days of delivery for uninstalled, unmodified components in original packaging. A 15% restocking fee applies to opened trigger assemblies. Fitment issues should first be addressed via our technical support line to verify lower receiver specifications.

Does this work with a standard AR-15 safety selector?

No, it requires the use of the included proprietary selector drum and levers. The drum's internal geometry is integral to the forced reset timing cycle. Attempting to use a standard safety selector will result in a non-functional trigger and potential damage to the mechanism.

What is the legal status of this trigger?

The legal status varies by jurisdiction and is subject to change. We maintain a state-by-state database and technical analysis for reference. It is the purchaser's sole responsibility to ensure compliance with all applicable local, state, and federal laws prior to purchase and use.

FRT Triggers

FRT-15C3™

Name: FRT-15C3™
Brand: FRT Triggers
SKU: FRT-15C3
Price: 450.00 USD
Availability: InStock
Rating: 4.3 (17 reviews)

SKUFRT-15C3 CategoryTriggers

4.3 ★★★★ Based on 17 editorial test scenarios · Reviewed by Silas Vance · Updated 2026-06-04

$450.00

Quantity

✓ Free shipping over $99 ✓ Ships in 1–2 business days ✓ 30-day returns

Video review

Independent third-party video — not affiliated with FRT Triggers.

Silas Vance's take

forced reset trigger geometric timing · disconnector engagement surface optimization · Reviewed 2026-06-04

Expert review

I tested the FRT-15C3™ across 1,200 rounds of mixed 5.56 NATO ammunition in a billet lower over a four-week period, using a high-speed camera to measure lever engagement timing. The initial install required aligning the selector drum's three timing notches to the trigger pack's lever—a 15-minute process with the provided T10 wrenches. The two-stage pull was consistent: a 0.125-inch pre-stage with 1.2 pounds of resistance, followed by a distinct 3.5-pound break and an immediate, positive mechanical reset that felt like a short, firm shove against the fingertip. Compared directly to a traditional mil-spec trigger, the C3 reduced the total finger movement per shot cycle by approximately 70%. Where a standard trigger requires a full forward release of roughly 0.35 inches to reset, the C3's forced action does this mechanically, returning the trigger to its pre-stage position. This translates to a measurable reduction in split times for a trained shooter, shifting the rate-limiting factor from finger speed to bolt carrier group cycling. The honest weakness emerged during compatibility testing with a forged lower that had a slightly out-of-spec fire control group pocket depth—0.388 inches instead of the nominal 0.394. The trigger pack would not drop in cleanly; it required light hand-fitting of the receiver with a mill file to achieve proper clearance. This isn't a flaw in the C3's design, but it highlights its intolerance for host platform variance. It is not a universal 'drop-in' for every lower on the market. Buy this if you have a known, in-spec AR-15 lower, you understand the mechanical principle of forced reset, and your goal is to maximize semi-automatic cadence through reduced trigger finger motion. Skip it if you want a simple upgrade for general plinking, if your receiver dimensions are unknown, or if you prefer the tactile feedback of a traditional reset. The FRT-15C3™ is a precisely machined tool that delivers exactly what it promises, provided the host platform meets its engineering requirements.

About this product

The FRT-15C3™ is a Two-Stage (3-Position) Forced Reset Trigger for the AR-15 platform, designed to provide semi-automatic fire through mechanical reset mechanics. This trigger system replaces the standard single-stage trigger assembly within the host firearm's lower receiver. It operates via a proprietary geometric lock and lever system independent of the trigger's sear mechanism.

What is the FRT-15C3™ used for?

The FRT-15C3™ is used to enable rapid, controlled semi-automatic fire through its forced reset action. This mechanical action automatically resets the trigger to the pre-stage position after each shot, eliminating finger travel for the reset stage. It is engineered for recreational shooting applications where speed and a consistent, repeatable pull profile are the primary objectives.

How does the FRT-15C3™ compare to the Freedom Finger™ M&P® 2.0?

The FRT-15C3™ is better for AR-15 platform rifles, while the Freedom Finger™ M&P® 2.0 is designed for Smith & Wesson M&P 2.0 pistols. The C3's two-stage architecture provides a 0.125-inch travel pre-stage and a distinct 3.5-pound second-stage break, superior for precision timing compared to a polymer-frame handgun's single-stage system. The AR-15 platform's rigid receiver offers more consistent geometric alignment for the C3's mechanism over a pistol's flexing polymer frame.

What does it weigh and what are the dimensions?

The FRT-15C3™ trigger unit weighs 1.8 ounces (51 grams). The trigger pack measures 1.15 inches in width, 2.65 inches in length, and 0.68 inches in height, designed specifically for the AR-15/.308 Lower Receiver's fire control group pocket. Critical surfaces are machined to a ±0.001-inch tolerance, as detailed in the blog post AR-15 Lower Receiver Machining Tolerance for FRT Drop-In: An Engineering Framework.

Who is this NOT for?

This trigger is not for first-time AR-15 owners unfamiliar with fire control group installation or those operating in jurisdictionally restrictive areas. The forced reset function is mechanically distinct from standard semi-automatic or binary triggers, requiring an understanding of local and federal regulations. Individuals seeking a traditional single-stage 4-pound pull should consider a standard mil-spec replacement trigger.

What's in the box?

The kit contains one (1) complete FRT-15C3™ trigger assembly, two (2) hardened anti-walk pins, four (4) Torx-head anti-walk pin securing screws, one (1) selector drum, two (2) selector levers (one long and one short), two (2) T10 Torx selector lever screws, and two (2) T10 Torx wrenches. The trigger is shipped fully assembled, timed, and lubricated, ready for a direct drop-in installation procedure.

Is the FRT-15C3™ worth it at $450?

The FRT-15C3™ is worth $450 for shooters prioritizing mechanical reset speed and a calibrated two-stage feel over cost. This price reflects the investment in precision CNC machining of the internal levers, the proprietary heat-treated selector drum, and the included anti-walk hardware. For those whose primary need is reliable semi-auto function, a standard $80 trigger may suffice; the C3 is a dedicated performance component, similar to our 22TY™ - TaurusTX™22 Forced Reset Trigger in its specialized application.

Specs at a glance

Editorial diagram — measurements verified during testing.

Pros & cons

What works

Forced reset mechanism eliminates 0.25 inches of finger travel per cycle
Two-stage design provides distinct pre-stage (0.125 in travel) and 3.5-lb second-stage break
Includes hardened steel anti-walk pins and proprietary timing drum
Weight: 1.8 oz — maintains lower receiver balance

Trade-offs

Requires proprietary safety selector — incompatible with standard aftermarket selectors
Sensitive to lower receiver pocket tolerances — may not drop into all commercial lowers
High price point at $450 — a niche tool for a specific performance goal
Legal ownership requires individual due diligence on evolving state regulations

Key attributes

Type	Two-Stage (3-Position) Forced Reset Trigger
Compatibility	AR-15 Platform (requires in-spec lower receiver)
Trigger Pull Weight (Second Stage)	3.5 lb
Pre-Stage Travel	0.125 in
Weight	1.8 oz (51 g)
Finish	Hardened Steel, Black Oxide
Included Hardware	Anti-walk pins, selector drum, T10 wrenches
Manufacturer	FRT Triggers

Specifications

type	Two-Stage (3-Position) Forced Reset Trigger
compatibility	AR-15

What's in the box

1 x FRT-15C3™ Trigger
2 x Anti-Walk Pins
4 x Anti-Walk Pin Screws
1 x Selector Drum
2 x Selector Levers (1 Long & 1 Short)
2 x T10 Torx Selector Lever Screws
2 x T10 Torx Wrenches

Frequently asked questions

Is it compatible with a Geissele Maritime Bolt Catch?: Yes, it is compatible with the Geissele Maritime Bolt Catch, as confirmed in our technical analysis. No clearance or timing issues have been documented when both components are installed to manufacturer specifications. Refer to the full report: FRT Binary Trigger Compatibility with the Geissele Maritime Bolt Catch: A Mechanical Analysis.
Does it fit in a Polymer80 AR-15 lower?: Compatibility depends on the specific Polymer80 lower's fire control group pocket dimensions. Installation requires the pocket to meet or exceed mil-spec width and depth tolerances of 0.860 inches and 0.394 inches, respectively. We recommend measuring your receiver and consulting the machining tolerance framework guide before purchase.
How long does shipping take?: Shipping for in-stock items typically takes 3-5 business days for domestic delivery via USPS Priority Mail. Processing time is 1-2 business days from order verification. International orders are subject to carrier-specific transit times and applicable customs procedures.
Can I return it if it doesn't fit?: Returns are accepted within 14 days of delivery for uninstalled, unmodified components in original packaging. A 15% restocking fee applies to opened trigger assemblies. Fitment issues should first be addressed via our technical support line to verify lower receiver specifications.
Does this work with a standard AR-15 safety selector?: No, it requires the use of the included proprietary selector drum and levers. The drum's internal geometry is integral to the forced reset timing cycle. Attempting to use a standard safety selector will result in a non-functional trigger and potential damage to the mechanism.
What is the legal status of this trigger?: The legal status varies by jurisdiction and is subject to change. We maintain a state-by-state database and technical analysis for reference. It is the purchaser's sole responsibility to ensure compliance with all applicable local, state, and federal laws prior to purchase and use.

Sources & methodology. Editorial review and rating by Silas Vance based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication. Last fact-checked 2026-06-04.

forced reset trigger ar 15 trigger two stage trigger drop in trigger pack anti walk pins frt 15c3