SR-16 (Stoner Rifle) is the full-auto variant of the SR-15 Rifle designed based on the M4A1 Carbine. It has the similar outlook of the M4A1 Carbine but equipped with a fixed stock found on the M16 rifle. SR-16 is mainly provided to Law Enforcement and military service, and it has been used by Hong Kong SDU as marksman rifle.

WE KATANA M4 RIS AEG is the new tactical rifle in WE AEG Series which comes in a new designed KATANA Split gear box system. The KATANA AEG system comes with a changeable cylinder unit and the new designed gear box in the lower frame. It will comes with 3 types of cylinder unit (300 / 400 / 450 FPS) and the 400 FPS cylinder is the standard eqippment with the KATANA AEG. Although the gear box is special made, it can compatible with most of the parts of  ver 2 gear box (gear set, selector plate and motor). When user need to change the cylinder unit, please ensure the selector is in “Safe” before changing. 

Also, the hop up system and inner barrel is compatible with TM M4 AEG standard, and it also comes with the same function already on their M4 AEG: When user turns to “Safe”, it will release the spring in the gear box back to normal state.

Features:
14mm”-” Steel made Flash Hider.
Metal RAS Handguard with with 14.5 inch outer barrel.
The outer barrel can switch into 10.5 inch by removing the extended barrel assembry. User also can replace with shorter inner barrel for making their own CQB mod.
Comes with metal frame with no marking and comes with a removable carrying handle.
Standard 20mm rail on the upper frame for rail attachments.
New designed KATANA Split Gear box system comes with a changeable cylinder unit and the gear box in the lower frame.
The Red Cylinder Set (400 FPS) is included.
The new gear box can compatible with most of the parts of ver 2 gear box (gear set, selector plate and motor). 
When user need to change the cylinder unit, please ensure the selector is in “Safe” before changing. 
Adjustable Hopup system and inner barrel are compatible with TM M4 AEG standard.
Bolt catch function available for easy Hopup adjustment.
Nylon Fiber made Fixed Battery Stock which Store up to 9.6V Large type batteries (Small Plug).
Spring release function when user switch the selector to “Safe”.
Ready to go for 350 – 400 FPS with the standard Red cylinder unit.
Included 430 rounds M4 Hi-cap Magazine.
Compatible with most of the TM M4 style magazines in the market.

** Please note that Battery and Charger are not included.**

Specifications:
Length: 865mm
Barrel Length: 363mm
Shooting Mode: Safety, Semi-Auto & Full-Auto
Weight (g):  3210 (gun with mag), 4410 (with box)
Gear Box: WE KATANA Split Gear Box with changeable Cylinder unit
Color: Black
Battery: 9.6V Large type batteries (Small Plug).
Magazine Capacity: 430 rds
Material: Metal & Nylon Fiber
Bullet type: 6mm BB
Power (Muzzle Velocity): 350 – 400 FPS with the standard Red cylinder unit.
Manufacturer: WE