Quick Answer
Choose the Bull Puppy Missile 3.1 for a versatile, beginner-friendly scale kit with 38mm and 29mm motor options, or the AMRAAM 3 Missile for a taller, semi-scale build with a payload bay and fiberglass fins.
Scale Fidelity vs Build Simplicity
Both kits are modeled after real missiles, but they approach scale in different ways. The Bull Puppy is based on the U.S. Air Force's Bull Pup missile and is described as visually exciting on the ground and in flight. It's marketed as perfect for beginners and experienced rocketeers alike, which suggests a build that doesn't demand advanced skills.
The AMRAAM 3, from Public Missiles, Ltd., is a semi-scale model of the AIM-120 AMRAAM. It stands 61.2 inches tall and uses pre-slotted Quantum Tube airframe and G-10 fiberglass fins. These materials point to a more involved assembly, with fiberglass fins requiring careful bonding and finishing.
Motor Mount Flexibility
Motor mount size is a key difference. The Bull Puppy comes with a 38mm motor mount and can fly on G through I motors. It also accepts 29mm motors when you use the optional HAMR adapter, giving you flexibility to start with smaller motors and step up later.
The AMRAAM 3's motor mount size is not specified in the catalog facts. If you're set on a specific motor range, you'll need to check the manufacturer's specifications before buying. For fliers who want to grow into higher power, the Bull Puppy's adapter option is a clear advantage.
Payload and Recovery Features
The AMRAAM 3 includes a 24-inch payload bay, which is a notable feature for fliers who want to carry altimeters or other small payloads on their flights. It also comes with a Kevlar tether and a nylon parachute, both of which are quality recovery components.
The Bull Puppy's catalog facts don't mention a payload bay or specific recovery hardware. If you plan to fly electronics or need a proven recovery system out of the box, the AMRAAM 3's included features are worth considering.
Bull Puppy vs AMRAAM 3: Trade-offs
- Motor flexibility: The Bull Puppy's 38mm mount with optional 29mm adapter lets you fly G through I motors and adjust power as you gain experience. The AMRAAM 3's motor mount size isn't listed, so you'll need to verify compatibility with your preferred motor class. If motor range is critical, confirm the AMRAAM 3's specs before buying.
- Build complexity: The Bull Puppy is positioned as beginner-friendly, while the AMRAAM 3's fiberglass fins and pre-slotted tube suggest a more involved assembly. Choose the Bull Puppy for a smoother first build; pick the AMRAAM 3 if you're comfortable with fiberglass work.
- Payload and recovery: The AMRAAM 3 includes a 24-inch payload bay, Kevlar tether, and nylon parachute—useful for altimeter flights. The Bull Puppy's catalog doesn't mention these features, so if you plan to fly electronics, the AMRAAM 3 has the edge. If you don't need a payload bay, the Bull Puppy's simplicity may be more appealing.
Product Facts
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Bull Puppy Missile 3.1": Based on the U.S. Air Force's Bull Pup missile, this kit is visually exciting on the ground as well as in-flight. It's perfect for beginners and experienced rocketeers alike. You get a scale look with a build that won't overwhelm you if you're new to high power rocketry.
Bull Puppy Missile 3.1"
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AMRAAM 3 Missile: The AMRAAM 3 stands 61.2 inches tall and includes pre-slotted Quantum Tube airframe, G-10 fiberglass fins, Kevlar tether, and a 24-inch payload bay. The taller airframe and fiberglass fins offer a more substantial build with payload capacity for electronics.
AMRAAM 3 Missile
Which Kit Should You Choose?
Best for
- Beginners and intermediate fliers who want a scale look with flexible motor options
- Fliers who plan to start on 29mm motors and upgrade to 38mm later
Not for
- Fliers who need a payload bay for electronics out of the box
- Those who prefer a taller, more detailed semi-scale build with fiberglass fins
