CNC Aluminum M4P Hop-Up Chamber for M4 Polarstar Series - MAXX MODEL

The MAXX MODEL M4P PRO hop-up chamber ("P" stands for Polarstar) is a premium upgrade component, precision CNC machined from a solid block of 6061 aircraft-grade aluminum. It is specifically designed to deliver accurate and consistent performance with HPA (High Pressure Air) PolarStar Engines installed on standard M4/M16 platforms.

Key Features (Optimized for HPA Polarstar):

• Materials and CNC Machining: Made with tight tolerances for maximum accuracy, consistency, and durability.
• HPA PolarStar Nozzle Compatibility: Designed to accept the specific nozzle length of HPA PolarStar M4 engines.
• Air Nozzle Inlet Adaptor: Equipped with an interchangeable adapter (OD 11mm included) to ensure the hop-up unit is perfectly centered with the HPA engine nozzle outlet, without wobble. (11.5mm and 12mm adapters sold separately).
• Precise Rotary Adjustment: Features an aluminum rotary dial for fine and stable hop-up adjustments.
• Hop-Up Lever and Multiple Nubs: Includes a redesigned hop-up lever and various types of 4mm CNC aluminum nubs (soft round, soft flat, hard concave) to optimize performance with both R-Hop and Standard-Hop buckings. (Optional 6mm nubs).
• Bucking Compatibility: Fully compatible with most aftermarket soft and hard buckings without FPS loss or BB drop.
• Removable CNC Brass Side Wings: Ensure smooth insertion into the outer barrel grooves.
• Advanced CNC Delrin Locking C-Clip: Securely holds the inner barrel in place without wobble or twisting.
• BB Retention System (BB Latching System): A new system prevents BBs from dropping after removing the magazine. BBs can be manually released by pressing the lever.
• Dual Compression Springs: An upper and a center spring ensure the hop-up unit is positioned straight and airtight.
• Tracer Ready: Prepared for installation of the MAXX MODEL Dual UV LED Tracer Module (sold separately).

Technical Specifications:

• Type: CNC Hop-Up Chamber
• Model: M4P PRO (with BB Latching System)
• HPA System Compatibility: PolarStar Engines on M4/M16 platform
• Gearbox/HPA Compatibility: Nozzle outlet with 11mm internal diameter
• Material: CNC 6061 Aluminum, Acrylic (side covers), CNC Brass (wings, barrel spacer), Steel (pivot pin, spring guide, springs), CNC Delrin (C-Clip)
• Overall Length: 51.15mm
• Overall Height: 37.75mm
• Brand: MAXX MODEL
• Production: Canada 

Advantages:

• Specifically optimized for HPA PolarStar Engines
• Precision, consistency, and durability thanks to CNC machining and materials
• Fine rotary hop-up adjustment
• Optimal support for R-Hop and Standard-Hop with included nubs
• Excellent air seal and centering (Adapter, Wings, C-Clip, Springs)
• Anti-BB drop system (BB Latching System)
• Prepared for UV LED tracer module

Important Notes:

• Installation may increase FPS by 10 to 30 compared to the stock configuration. Always check the power after installation!
• Installation requires technical skills. The use of safety glasses and lubrication is recommended.

Package Contents:

• 1x CNC M4P Pro Hopup Chamber (with BB Latching System)
• 2x CNC Acrylic Side Covers
• 2x 2.5mm CNC Brass Side Wings
• 1x CNC Steel Pivot Pin
• 1x CNC Aluminum Hopup Lever
• 1x CNC Aluminum Soft Round Nub
• 1x CNC Aluminum Soft Flat Nub (4mm)
• 1x CNC Aluminum Hard Concave Nub (4mm)
• 3x Steel Nub Springs
• 1x CNC Steel Spring Guide
• 1x Steel Upper Compression Spring
• 1x Steel Center Compression Spring
• 1x CNC Delrin Locking C-Clip
• 1x CNC Brass Barrel Spacer
• 1x Barrel Spacer O-ring
• 1x CNC Aluminum Rotary Dial
• 1x CNC Aluminum Air Nozzle Inlet Adapter (OD11mm)
• Instruction Manual