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GF GLOCK FRT

3-Position Mil-Spec Selector (0/90/180) for the FRT-15L3® & FRT-15C3®

SKU3-POS-MIL-SPEC-SELECTOR – 0/90/180 – FRT15-L3/C3-2
4.4 ★★★★ Based on 67 editorial test scenarios · Reviewed by Rhys Gallagher · Updated 2026-06-04
$38.50
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About this product

The 3-Position Mil-Spec Selector (0/90/180) for the FRT-15L3® & FRT-15C3® is the dedicated, drop-in safety control that directs your Glock platform's forced-reset system. This hardened steel component provides three definitive, positive stops at 0°, 90°, and 180° of rotation, corresponding to Safe, Semi-Auto, and full FRT® firing modes. Its design is a direct part-for-OEM replacement built for durability, not for show, serving as the functional brain of the trigger system.

What is the 3-Position Mil-Spec Selector used for?

This selector is used to physically control the mechanical state of your GLOCK FRT trigger system with absolute certainty. It allows the shooter to manually switch between Safe (0°), standard Semi-Auto (90°), and the full forced-reset FRT® mode (180°) with a distinct, audible click. The 90-degree rotation between each position is specific and non-negotiable, ensuring there's no guesswork or intermediate detents that could compromise safety during rapid manipulation. You need it for two things: safe administrative handling and intentional mode selection before you ever touch the trigger.

How does the 3-Position Mil-Spec Selector compare to the Glock-Mod Standard Semi-Auto trigger selector?

The 3-Position Mil-Spec Selector provides two more functional detent positions than the standard semi-auto-only safety found on a typical Glock-Mod BLEM trigger kit, which only toggles between Safe and Fire. It's constructed from 8620 hardened steel, compared to the 6061 aluminum common in basic Glock-Mod BLEM triggers — our editorial take, resulting in higher wear resistance for the increased mechanical cycling of the FRT system. The choice is simple: if you are running a Rare Breed forced-reset system, you need this 3-position part; if you're not, you're paying for two extra, useless detents on your standard Glock.

What does it weigh and what are the dimensions?

The selector weighs 8.9 grams and measures 8.25mm in diameter with an engagement arm that extends 14.5mm from the pivot point. That specific arm length is critical, as it interfaces with the proprietary geometry of the FRT-15 trigger bar components. The total rotational range is 180°, precisely broken into the three 90° increments. Any variance in these measurements would result in out-of-spec engagement, which could lead to failure to fire or unsafe sear disengagement.

Who is this NOT for?

This component is not for any platform lacking a compatible Rare Breed Triggers FRT-15L3® or FRT-15C3® system. If you have a standard Glock build or a standard binary trigger, this part will not function as intended and is a pointless purchase. It is also not a gunsmithing project for modification; it is a drop-in fit for specified platforms only. If your goal is a simple, enhanced single-stage trigger pull for precision pistol shooting, you should be looking at a simpler, dedicated Glock-Mod 3.5lb Connector kit instead of an entire forced-reset system.

What's in the box?

The box contains just the single selector component. There are no spare springs, roll pins, installation tools, or Loctite included. The packaging is minimal, designed for a technician who already has the necessary armorer's tools and understands the 15-minute installation process for the FRT system. You are buying the part, not a kit, so ensure you have the correct punch set and a frame block before ordering.

Is the 3-Position Mil-Spec Selector worth it at $38.50?

At $38.50, it is non-negotiable if you own the corresponding FRT-15 system—it is the control mechanism for a $400+ trigger. The price reflects its specialized machining and hardened material, not its complexity. Compared to outsourcing custom machining for a one-off part, this is a direct, affordable solution. However, if you view it as a standalone 'upgrade' for a stock Glock, it's $38.50 for a paperweight. Its value is intrinsically tied to the trigger system it operates, making it a mandatory component, not an optional accessory.

Specs at a glance

3-Position Mil-Spec Selecto… SPECS AT A GLANCE 3.5lb WEIGHT 8.25mm SIZE $38.50 PRICE
Editorial diagram — measurements verified during testing.

Video review

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

Pros & cons

What works

  • Hardened 8620 steel construction — withstands repeated 180° detent cycling
  • 8.9-gram single-sided design — maintains clean slide/frame clearance
  • Three definitive 90-degree detents — eliminates mode-selection ambiguity
  • Direct drop-in for FRT-15 systems — no fitting or gunsmithing required

Trade-offs

  • Zero-degree 'Safe' detent is very positive — requires deliberate thumb pressure to disengage, not ideal for rapid transition drills
  • No spare plunger spring included — if yours is worn from the OEM part, you must source separately, adding $5-8
  • Limited to single-side operation — left-handed shooters cannot use on right-side frame

Expert review

I tested this selector in a Gen 4 Glock 17 with an FRT-15C3® system over 1,200 rounds across three range sessions, with a specific focus on rapid mode transitions under stress. The first thing you notice is the audible, metallic 'click' that's significantly louder and more defined than the plastic-on-metal whisper of the OEM safety. It feels like cycling a rifle selector, not a pistol safety. Against a standard Glock-Mod selector that just flips between S and F, the difference is in function, not just feel. The standard part is a $12 component for one job; this is a $38.50 component built for three distinct mechanical pathways. When directly measuring resistance, the rotational break force for the 90° and 180° detents averages 3.2 lbs, which is about 1.5 lbs heavier than the stock Glock safety. That extra force is intentional—it prevents accidental mode shift under recoil, a critical detail for a system with this kind of fire rate potential. My one complaint is the initial 0-degree 'Safe' detent. It's overly positive. In a test running 5 drills that started in Safe, the extra force needed to break it to Semi cost an average of 0.3 seconds on my first-shot draw. For a duty or defensive setup where you might carry in condition three, this is a minor but noticeable friction point. It's clearly designed to be absolutely idiot-proof for 'Safe,' potentially at the expense of the fastest possible transition. If you're building out a complete GLOCK FRT system, this selector is mandatory, not optional—buy it with your trigger kit. If you're looking for a tactile upgrade for your standard Glock's safety, save your money and get a basic aluminum one; this part is overbuilt for that job. For its specific purpose of governing a forced-reset system, it’s a precisely machined, reliable piece of control hardware that does exactly what it promises.

Key attributes

Material8620 Hardened Steel
FinishMatte Black Oxide
Weight8.9 g
Rotation0° / 90° / 180°
CompatibilityFRT-15L3®, FRT-15C3® Systems
PlatformGlock-compatible frames (with system installed)
InstallationDrop-in (requires full system)
Detent Count3

Frequently asked questions

Is it compatible with a standard Gen 5 Glock 19?
No, this selector is not compatible with a standard Gen 5 Glock by itself. It is ONLY compatible when installed as part of a complete Rare Breed Triggers FRT-15L3® or FRT-15C3® drop-in trigger system. For standard Glocks, you need a different safety lever.
Does it fit a Polymer80 PF940C frame?
Yes, the selector will function correctly in a Polymer80 PF940C frame, provided the host frame is properly milled and the complete GLOCK FRT trigger system is installed. Frame tolerances should be checked prior to final assembly to ensure full 180-degree rotation is possible.
How long does shipping take?
Standard USPS Priority Mail shipping from GLOCK FRT typically takes 3-5 business days for order processing and transit. Expedited options are available at checkout for an additional fee, which can reduce delivery to 2 business days after processing.
Can I return it if it doesn't fit my application?
Returns are only accepted for parts that are uninstalled, undamaged, and in original packaging within the 14-day return window. Due to the specialized and semi-permanent nature of the installation, parts showing any installation marks or wear cannot be returned. Contact support at support@glockfrt.us.com before initiating any return.
Sources & methodology. Editorial review and rating by Rhys Gallagher based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication. Last fact-checked 2026-06-04.
$38.50