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.

Frequently Asked Questions

What is the FPS?

Approximately 330–350 FPS with 0.20g BBs as specified for this model. Actual readings vary with temperature, gas pressure or battery charge, BB weight, and hop-up setting, so always confirm against your field’s chrono limits before a game.

What firing modes does it have?

It offers semi-automatic and full-automatic fire with a safety position on the selector. Use full auto in short bursts — it empties the magazine and drains gas or battery noticeably faster than semi.

What powers it?

It is an electric AEG: a rechargeable battery pack drives the gearbox. Battery and charger are not included (see the package list above), so budget for a suitable pack and a smart charger if you do not already own them.

Is it full metal?

Yes — the main external construction is full metal, which gives it a solid, realistic weight. Metal parts still need normal care: keep moving surfaces clean and lightly lubricated.

What is included, and what do I need separately?

The package contents are listed in the description above. A battery and charger are not included and are sold separately.

What warranty and shipping cover this item?

It is covered by the Airgrix 30-day limited warranty and ships from our California warehouse. At $349.99 it qualifies for free US shipping on its own (free on orders $59+). Returns are handled under the store returns policy — see our Ordering, Shipping & Warranty FAQ page for the details.