Archer on Airguns: Crosman 1377 or 2240 trigger pull weight too heavy? Here's how to improve it.
12g CO2 Pump to PCP Adjustable Pressure Conversion KIT HPA for Crosman 1377 2240 | eBay
Steel Breech - Airguns Europe
Crosman Steel Breech Upgrade Kit for 2240, 2250, 2260, 2289, 1377 and 1322 - Bagnall and Kirkwood Airgun Spares
SQOTDR Kit di conversione ad alta pressione CO2/pompa a PCP da 12 g per Crosman 1377 1322 2240 2250 2260... (per barilotto da 18") : Amazon.it: Sport e tempo libero