The 
G&G CM18 MOD1 DST
 is a reliable and popular electric airsoft rifle (AEG) known for offering high performance at an entry-level price. "DST" stands for "Desert Sand Tone," referring to its distinctive two-tone color scheme. 
 
Key Features and Specifications
Build Material: The receiver, rail system, stock, and pistol grip are constructed from a durable, high-impact nylon-reinforced polymer, keeping the rifle lightweight yet robust.
Gearbox: It features a full metal, fully upgradeable Version 2 gearbox with 8mm bearings, providing a reliable internal mechanism.
Muzzle Velocity: The airsoft gun typically shoots between 330 to 370 feet per second (FPS) with 0.20g BBs, making it suitable for both indoor CQB and outdoor field play.
Magazine: It comes standard with a 120-round polymer mid-capacity magazine that uses an elongated follower to feed every last BB. It is compatible with most M4/M16 style magazines.
Rail System: The rifle includes a 9.5" free-float polymer rail interface system (RIS) for mounting accessories like lights, lasers, and grips, along with a full-length top rail for optics. Four ladder rail covers are also included.
Sights: It features angled, flip-up front and rear iron sights that can be folded down or removed to accommodate optics.
Stock and Battery: The CM18 MOD1 has a 6-position retractable crane stock designed to house a nunchuck or butterfly style battery (9.6v NiMH or 7.4v LiPo recommended). A battery and charger are not typically included.
Length and Weight: The overall length is adjustable from 715mm to 810mm, and it weighs approximately 2000g (4.3 lbs).