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AEG Stock Tube to 1913 Picatinny Adapter - 5KU

14.90

Tax included

5KU adapter to convert the stock tube mount of M4/AR15 replicas into a 1913 Picatinny rail (MIL-STD-1913). Made of high-quality CNC Aluminum with hard anodizing, this "low-profile" adapter allows you to mount modern folding stocks (such as those in the MCX/MPX style).

It integrates a convenient QD attachment for a sling at the base. WARNING: As specified by the manufacturer, installation on many AEG receivers requires permanent modifications to the receiver.

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

This 5KU adapter is a high-end custom component designed to radically modernize the M4/AR15 platform. It is entirely made of high-quality aluminum through a process of precision CNC machining, and protected by a hard anodized coating.

Its function is to replace the standard AEG stock tube interface, providing instead a solid section of 1913 Picatinny rail. This unlocks compatibility with an entire new generation of stocks (such as those for SIG MCX/MPX) that use this mounting standard.

The design is lightweight (only 30 grams), low profile, and integrates a practical QD sling swivel attachment (Quick Detach) directly at the base.

Main Advantages

Modernizes the Platform: Converts the M4 stock tube mount into a 1913 Picatinny rail.
Premium Construction: CNC aluminum with hard anodizing.
Integrated QD Attachment: QD sling attachment point at the base.
Lightweight and "Low-Profile": Weighs only 30g and does not add bulk.
Maximum Stock Compatibility: Allows the use of MCX, MPX, and other 1913-style stocks.

Technical Specifications

Manufacturer: 5KU
Model: Stock Tube to Picatinny Adapter
Material: CNC Aluminum (anodized)
Compatibility: M4 / AR15 Series (See installation note)
Output Interface: 1913 Picatinny Rail
Length: 52 mm (5.2 cm)
Width: 35 mm (3.5 cm)
Height: 16 mm (1.6 cm)
Weight: 30 g (0.03 kg)
Color: Black

Package Contents

1 x 1913 Picatinny Adapter

Fundamental Installation Note: As specified by the manufacturer, installation on many M4/AR15 AEG replicas requires technical and permanent modifications to the receiver (lower receiver). This often includes removing the protrusion (threaded or not) where the stock tube screws on. Installation is recommended only for experienced technicians.

Brand 5KU

Reference 11919706000,5KU-317