Ampell Acro I S177 (BB)

Thompson/Center Contender (various calibers)

Ampell Playtime Products, Acro I S177 (BB)
Replica Of:
Thompson/Center Contender

Made In:

, steel BBs, 80-shot gravity fed magazine
Air Source:
CO2, 12 g Powerlet
Recommended Pellet or BB:
Crosman Copperhead BBs (5.1 gr)
Weight (lb)/Length (in):
2.2, 11.5
Body Material/Finish/Grips:
metal, black, metal
Barrel Length (in)/Material/Rifled:
5.9, steel, no
Trigger Action:
Trigger Pull (lbs)/Adjustable:
4.8 (SA), no
Sights (front/rear):
fixed, adjustable (elevation)
Velocity (fps):
Not known from manufacturer
Sound Level: 93
Thickness of Pellet Holder (in): N/A
Manufactured Dates:
85%, no, no
Serial Number:


Comments: The Ampell Acro I S177 (BB) is an all-metal airgun that was manufactured by Ampell Playtime products, located in Honeoye, New York. Most of the gun's parts were made by the Shakespeare fishing reel company in Canada (this is the source of the "S" on the grip covers). The various Acro I models differ only in the caliber of pellet or BB they use. The muzzle velocity of the S177 (BB) is moderate and the good trigger and acceptable accuracy make this a good airgun for close-in target practice. The Acro I was manufactured and marketed for a little over a year around 1975. Ampell Playtime Products went out of business in late 1975.

Performance: Measurements were made on 4/08/07 at a temperature of 62 F and 14' elevation. A ten shot string was fired from a bench rest at 15' using Crosman Copperhead BBs (5.1 gr). The highest velocity measured was 346 fps, the lowest was 337 fps (average of the 10-shot string was 341 fps). A seven shot string fired with open sights grouped at 0.89". Click the thumbnail below to see a larger image. Click here for a description of the measurement methods.


Right Profile:
Front View:
Right Side Markings: The gun is cocked by pushing the knob shown in the photo forward (to the right). Once the gun is cocked, there is no way to decock it without firing it.
Left Side Markings:
Barrel Markings:
Loading BBs: BBs are loaded (up to 80) through the port on the underside of the barrel. Tilt the gun up, open the bolt, shake the gun, close the bolt and then cock the gun.

Loading CO2: The CO2 cylinder is pierced by tightening the coin-slot screw at the base of the grip. The left grip cover is held on by clamping to the CO2 cylinder.



 Copyright 2006