Echo1 BTS Mod 3 Full Metal Airsoft AEG – Compact MP5-Magazine Platform, CNC M-LOK Handguard, PDW Stock (JP-141)

The Echo1 BTS Mod 3 is a compact, full-metal electric airsoft gun built around a modernized M4-derived AEG platform. It combines a maneuverable PDW-style stock, CNC free-floating M-LOK handguard, flip-up sights, and upgraded CYMA Platinum OEM-style internals in a compact package designed for lawful airsoft games, training, and collection use.

Unlike a standard M4-magazine AEG, the BTS Mod 3 uses MP5-style magazines, including straight and curved styles made for compatible MP5/SG/SOB-series platforms. The included magazine is a 90-round mid-cap magazine. It is not an M4/M16 magazine platform.

Key Features

• Compact full-metal Echo1 BTS Mod 3 electric airsoft gun
• MP5-style magazine platform with M4-style drop-free magazine release
• Includes one 90-round MP5-style mid-cap magazine
• CNC free-floating M-LOK handguard for compatible accessories
• Collapsible PDW-style stock with rear battery compartment
• Adjustable metal rotary/large-dial hop-up chamber accessed through the ejection port
• Safe, semi-automatic, and full-automatic fire modes
• Functioning bolt catch and flip-up front and rear sights
• CYMA Platinum OEM-style Version 2 gearbox platform with MOSFET and microswitch trigger
• Quick-change spring system for simplified maintenance and spring changes
• 14mm negative (counter-clockwise) muzzle thread for compatible airsoft muzzle devices

Performance Notes

Published velocity figures for the BTS Mod 3 vary by production batch, test conditions, spring configuration, BB weight, temperature, battery condition, and chronograph method. Typical listings place it in the approximate 330–350 FPS range with 0.20g BBs; always chronograph the unit with the BB weight and field limits applicable to your location before use.

The BTS Mod 3 is a compact platform often suited to close-quarters-oriented play. Confirm your local field’s velocity, joule, magazine, and battery requirements before purchase and use.

Product Specifications

Package Includes

• 1 × Echo1 BTS Mod 3 Full Metal AEG (JP-141)
• 1 × 90-round MP5-style mid-cap magazine
• 1 × Cleaning rod
• 1 × Flip-up front sight
• 1 × Flip-up rear sight

Important Purchase Notes

• This product uses MP5-style magazines, not M4/M16 magazines. Please confirm magazine compatibility before ordering accessories.
• Battery, battery charger, BBs, and BB loader are not included unless explicitly stated otherwise.
• Use only appropriate 6mm airsoft BBs and a battery compatible with the installed connector and manufacturer guidance.
• Performance figures are approximate. Chronograph results can vary with BB weight, battery output, spring configuration, temperature, maintenance, and production batch.
• Verify local laws, age restrictions, transport requirements, and field rules before purchase or use.
• Product photos, packaging, markings, included accessories, and orange-tip configuration may vary by production batch and destination requirements.

Safety Notice

• For lawful airsoft use only.
• Always wear properly rated eye protection and follow established field safety rules.
• Never point the product at people or animals outside a controlled and lawful airsoft environment.
• Keep the magazine removed, the chamber clear, and the product stored securely when not in use.

California Proposition 65 Warning: This product may contain chemicals known to the State of California to cause cancer or reproductive harm.