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FPS Ergal Ball Bearing Spring Guide for M4 SRE MARUI

14.90

Tax included

FPS ball bearing spring guide specifically for Tokyo Marui M4 SRE/NGRS rifles. Made of CNC machined Ergal with hard anodizing (40 microns). The ball bearing improves smoothness, stability and spring life, with a slight increase in velocity (2-3 m/s). 100% Made in Italy.

Size Guide

This is an approximate conversion table to help you find your size. If you have already purchased an item from our brand, we recommend you select the same size indicated on its label.

Men's Sizes

International	XS	S	M	L	XL	XXL	XXXL
Europe	32	34	36	38	40	42	44
US	0	2	4	6	8	10	12
Chest Circumference (inches)	33-35"	36-38"	39-41"	42-44"	45-47"	48-50"	51-53"
Chest Circumference (cm)	84-89	91-97	98-104	107-112	114-119	122-127	129-134
Waist Circumference (inches)	28"	30"	32"	34"	36"	38"	40"
Waist circumference (cm)	71	76	81	86	91.5	96.5	101.5

LOWA FOOTWEAR SIZE CHART

SIZE SELECTION:

THE SIZES IN THE DROP-DOWN MENU ARE UK SIZES (ENGLISH)

conversion chart: UK size - (IT size) - size in mm

Size 6.5 (40) 257mm

Size 7 (40 3/4) 262mm

Size 7.5 (41.5) 266mm

Size 8 (42) 270mm

Size 8.5 (42.5) 274mm

Size 9 (43 1/4) 278mm

Size 9.5 (44) 283mm

Size 10 (44.5) 287mm

Size 10.5 (45) 291mm

Size 11 (46) 295mm

Size 11.5 (46.5) 300mm

Size 12 (47) 304mm

Size 12.5 (48) 308mm

Size 13 (48.5) 312mm

NEED ADVICE ON CHOOSING A SIZE?

Take one of your sneakers and look at the size in mm or cm, look at the diagram above to see what it corresponds to and order your size!

e.g., your sneaker is 27.2 cm long? Great, the closest and most correct size will be: "TG 8.5 (42.5) 274mm", in the purchase menu select size 8.5UK!

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Description
Product Details

The FPS Ergal ball bearing spring guide is a high-quality upgrade component, designed specifically for the new generation gearboxes of Tokyo Marui M4 SRE (Next Generation Recoil Shock) rifles.

Features and Materials:

Premium Material: Made of Ergal, a lightweight and high-strength aluminum alloy, which guarantees durability and superior performance compared to the standard spring guide.
Hard Anodizing: The Ergal rod is treated with a 40 micron hard anodizing to ensure exceptional wear resistance and a low friction surface.
Ball Bearings: The base of the spring guide is equipped with a high-quality steel ball bearing. This feature allows the spring to rotate freely during compression, reducing friction and torsion. Benefits include:
- Greater efficiency and durability of the spring.
- A more stable and consistent shooting action.
- Reduction of mechanical noise of the gearbox.
- A slight increase in BB velocity (estimated at 2-3 m/s).
Spring Compatibility: The shape of the rod is compatible with most AEG springs on the market.
Italian Quality: Product designed and manufactured entirely in Italy.

Technical Specifications:

Type: Ball Bearing Spring Guide
Compatibility: Tokyo Marui M4 SRE / NGRS (Next Gen) Gearbox
Material: Ergal (body), Steel (bearing)
Machining: CNC
Finish: 40 micron hard anodizing
Brand: FPS
Production: 100% Made in Italy

Advantages:

Greater durability: Ergal and ball bearings increase the life of the spring and gearbox components.
Better performance: The reduction of friction leads to greater efficiency and higher, more consistent FPS.
Noise reduction: The smoothness of the bearings reduces the noise produced by the gearbox.
Specific Compatibility: Specifically designed for Tokyo Marui M4 SRE rifles.
Velocity increase: Helps to increase the BB's muzzle velocity.
100% Made in Italy Quality.

Package contents: