The G&G GC16 Wild Hog 12" is a high-performance, full-metal (or polymer body, depending on the specific model/SKU) electric airsoft rifle known for its advanced internal features like an Electronic Trigger Unit (ETU) and a pre-programmed MOSFET. 
 
Key Features
ETU & MOSFET: The core features are the integrated MOSFET, which protects the electrical system and allows the use of higher-voltage LiPo batteries, and the Electronic Trigger Unit (ETU), which provides a faster trigger response and can be programmed for a 3-round burst mode. The user can switch between full-auto and 3-round burst by holding the trigger in semi-auto mode for 10 seconds.
Construction: The rifle has a robust construction, featuring an aluminum KeyMod handguard and a full-length 20mm Picatinny top rail for accessories. The receiver is typically metal or a high-quality, durable nylon-reinforced polymer, depending on the variant (GC16 vs. CM16).
Ambidextrous Controls: It is designed for versatility with an ambidextrous magazine release and fire selector switch.
Sound Amplifier: The outer barrel features a removable "sound hog" or sound amplifier flash hider, which makes the airsoft gun sound louder and more aggressive when fired, though this can be swapped out for other muzzle devices using the standard 14mm CCW thread.
Stock: It includes a six-position adjustable crane stock with a rubber butt plate that rotates to reveal the battery compartment in the buffer tube. 
Specifications
Feature 
Specification
Power Source
Electric (AEG)
Material
Aluminum/Steel/Zinc with Nylon/Fiber polymer parts (specifics vary by model)
Inner Barrel Length
304 mm
Overall Length
Approx. 855 mm (adjustable stock)
Weight
Approx. 2681 g
Magazine Capacity
300 Rounds (Hi-Cap, M4/M16 compatible)
Fire Modes
Safe, Semi-automatic, Full-automatic, Programmable 3-round burst
Hop-up
Adjustable, located behind the dust cover
Usage & Compatibility
The GC16 Wild Hog 12" is often recommended as an excellent option for both new and veteran airsoft players due to its range of features usually found on more expensive models. 
Batteries: The manufacturer generally recommends a 9.6V NiMH battery, but the MOSFET allows for the safe use of 11.1V LiPo batteries if handled correctly.
Accessories: The KeyMod rail system allows for the attachment of a variety of grips, rail panels, and other KeyMod accessories, while the 20mm top rail accommodates various scopes and sights.