KWA Advanced Gun Magazine (AGM) 40rd — LM4 PTR Series / LM4D Compatible Gas Magazine

Built for realism and reliability, the KWA Advanced Gun Magazine (AGM) is a purpose-designed 40-round green-gas mag for the LM4 PTR / LM4D family. It keeps the weight and feel that matter for MilSim and training while trimming 25% of the weight from the previous design — great for long days on the field or cranky vest setups. The updated shell includes a dry-fire function for realistic trigger practice and easier, safer dry training without cycling gas through the gun.

Manufactured and assembled to KWA's high standards, this mag ships as a single black unit and is loaded with pro-grade details (replaceable wear parts, a well-sealed fill valve, and a user-serviceable internal design). If you run LM4 PTR platform guns and want a gas magazine that’s built around training realism and longevity, this one was made for you.

Airsoft Extreme tip: use fresh silicone oil on the seal, prime the mag as shown in the KWA tutorial, and keep mags warm in pouches during extended shoots — these simple steps will keep your AGM behaving like new.

Features

• 40-round capacity with realistic round count for training & MilSim scenarios
• Dry-fire function for safe, realistic trigger practice without wasting gas
• Approximately 25% lighter than prior version for easier carry and faster reloads
• Designed for LM4 PTR Series / LM4D platform compatibility
• Field-serviceable with widely available replacement wear parts
• Single-mag ship — simple, no-frills packaging for teams and operators
• Pro tips printed and safety reminders included: inspect feed lips, check O-ring on fill valve, and apply silicone oil to the main seal

Specifications

Length: 190.5 mm
Weight: 680.4 g
Color: Black
Mag Type: Gas, M4/AR15 (LM4 PTR / LM4D compatible)
Rounds: 40
Gas Compatibility: Green Gas (recommended)
Package Contents: Single magazine