What type of regulator i need for bullboss .22?

This is the correct regulator for a BullBoss.

I do not believe so, your best bet would be to call the guys over at pyramid Air or airgun Depot, or hatson USA, maybe they can inform you of a regulator that will fit and match the low pressure

Will this upgrade the pressure on a .25 Hatsan Blitz?

Not worth the waste of money go with Huma

will this work on airmax .25?

This does fit the Airmax .25. You'll have to adjust the trigger and tune it to get the most out of your rifle.

Hatsan At44 H Class Regulator One Size Black

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Description

🎯 Elevate Your Aim with Precision Power!

VERSATILE USE - Perfect for all unisex-adult hunting enthusiasts seeking precision.
SEAMLESS UPGRADE - Transform your shooting experience with an easy drop-in installation.
COMPACT LIGHTWEIGHT - Designed for portability, weighing only 0.12 kg for effortless handling.
DURABLE CRAFTSMANSHIP - Manufactured from high-quality aluminum for long-lasting performance.
PRECISION PERFORMANCE - Experience unparalleled shot consistency with adjustable output pressure.

The Hatsan AT44 (H) Class Regulator is a high-performance accessory designed to enhance your shooting experience. With adjustable output pressure and a compact design, this regulator ensures consistent shot velocities, making it an essential upgrade for any hunting enthusiast. Crafted from durable aluminum, it combines functionality with reliability, all while being easy to install.

Specifications

ASIN	B0744K6WTQ
Best Sellers Rank	#319,430 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #31 in Air Gun Tools
Brand Name	Hatsan
Color	Black
Customer Reviews	3.8 3.8 out of 5 stars (64)
Date First Available	July 20, 2017
Included Components	Regulator
Item Package Dimensions L x W x H	5.04 x 1.42 x 1.34 inches
Manufacturer	Hatsan
Material	Aluminum
Model Name	PCP Regulator (H) Class
Number of Items	1
Package Weight	0.12 Kilograms
Part Number	HA90435
Size	One Size
Sport Type	Hunting
Suggested Users	unisex-adult
Warranty Description	90-Day Limited

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