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The Master Class Kit
For Crosman 2240 2250 1322 1377 P1322 P1377

I have designed the Master Class Kit to include the most sought after upgrades on both the CO2 guns and the Pumper guns. This is the kit to buy if you want to quickly and easily upgrade a bone-stock Crosman to an accurate, powerful pellet gun.

The kit includes:

On the CO2 guns, you will receive the Power Pack Plus as the power mods. That's the power valve, power spring, bored out bushing.

On the pumper guns, you'll receive the Flat Man's Kit, which is the Flat Top Valve / Piston, power spring, bored out bushing.

And a longer barrel of your choice.

Two Stage Trigger and Power Pack Plus

Flat Man's Pack and Steel Breech (both calibers available)

24" barrel for reference and fiber optic sight

The Master Class Kit

Barrel Length


Hidden Screw Steel Breech Add-On
(2240 / 2250 Only)

Lothar Walther Barrel Upgrade
Length Limited to 14.5"

Steel Breech 3-Screw Mod

Add Milled Plastic Rear Sight

Stainless Steel Bolt Upgrade

LPA MIM Rear Sight