Product Description The Crosman M4-177 is a tactical-styled variable pump air rifle built for shooters who want real control over their performance. Chambered in .177 caliber, it fires both steel BBs and .177 pellets, letting you switch ammunition types depending on your needs. The multi-pump pneumatic system allows you to dial in velocity anywhere from 350 to 700 FPS with pellets or up to 645 FPS with BBs, simply by adjusting the number of pumps. Built around a rifled steel barrel for consistent pellet accuracy, the M4-177 also features an adjustable synthetic stock that fits a range of shooter sizes, a dual-aperture rear sight, elevation-adjustable front pin sight, and a Picatinny rail ready for a scope or red dot. Whether you are working on fundamentals in the backyard or handling light pest control, the M4-177 delivers reliable, versatile performance in a durable, purpose-built platform. Product Highlights Variable Pump Power: Multi-pump pneumatic system delivers adjustable velocity from 350 to 700 FPS with pellets and up to 645 FPS with BBs, giving you precise control over output. BB and Pellet Compatible: Shoot .177 caliber pellets through the rifled steel barrel for tighter accuracy, or feed steel BBs through the 350-round reservoir for high-volume shooting. Tactical Synthetic Stock: Adjustable black polymer stock accommodates a wide range of shooter sizes and is built to withstand regular outdoor use. Dual Aperture Rear Sight and Picatinny Rail: Two instantly switchable aperture sizes on the rear sight plus an elevation-adjustable front pin, with a full Picatinny rail for mounting optics or accessories. Solid Build Quality: 34-inch overall length, 3.57 lb weight, bolt action, crossbolt safety, and a rifled alloy steel barrel make this a dependable choice for target practice and skill development. Specs Brand: Crosman Model Name: M4-177 Manufacturer Part Number (MPN): M4-177 UPC: 028478135321 Caliber: .177 Ammunition Type: BB and Pellet Power Source: Pump-Pneumatic (Variable) Velocity (Pellets): 350 to 700 FPS Velocity (BBs): Up to 645 FPS Action Type: Bolt Action Barrel: Rifled Steel, 17.25 inches Barrel Material: Alloy Steel Overall Length: 34 inches Weight: 3.57 lbs Stock Material: Black Polymer (Adjustable) Safety: Crossbolt BB Reservoir Capacity: 350 BBs Pellet Clip: 5-shot Firepow&';r pellet clip included Rear Sight: Dual Aperture, Removable/Adjustable Front Sight: Elevation-Adjustable Pin, Removable/Adjustable Rail System: Picatinny Color: Black Frame Material: Plastic Warranty: Limited 1 Year Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer. ]]>