Ampell Acro I S177

Thompson/Center Contender (various calibers)

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

Made In:

177, lead pellets, single-shot
Air Source:
CO2, 12 g Powerlet
Ampell pellets (.177)

Recommended Pellet or BB:
JSB Match Diabolo (7.4 gr)
Weight (lb)/Length (in):
2.2, 11.5
Body Material/Finish/Grips:
metal, black, metal
Barrel Length (in)/Material/Rifled:
8.5, steel, yes
Trigger Action:
Trigger Pull (lbs)/Adjustable:
5.0 (SA), no
Sights (front/rear):
fixed, fixed
Velocity (fps):
Sound Level: 92
Thickness of Pellet Holder (in): N/A
Manufactured Dates:
85%, no, no
Serial Number:


Comments: The Ampell Acro I S177 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 model S177 and S220 differ only in the caliber of the pellet they use. 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. The .177 caliber Acro I has a nice single-stage trigger and decent accuracy. The gun is hampered by an awkward loading system that makes it difficult to get the pellet seated properly. The Ampell Acro line of air pistols was introduced at a time when most air pistols were repeaters and modeled after popular firearms, so it's little wonder that a single-shot air pistol with unusual styling like the Ampell's had a short lifespan.

Performance: Measurements were made on 11/05/07 at a temperature of 71 F and 14' elevation. A ten shot string was fired from a bench rest at 15' using JSB Match Diabolo pellets (7.4 gr). The highest velocity measured was 342 fps, the lowest was 308 fps (average of the 10-shot string was 321 fps). A six shot string fired with open sights grouped at 0.72". 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:
Inside Grip Markings:
Loading Pellets: Pellets are loaded one at a time through the slot in the top just behind the rear sight. The bolt is pushed in and turned to the right to seat the pellet and seal the breech.

Loading CO2: The CO2 cylinder is pierced by tightening the coin-slot screw at the base of the grip.



 Copyright 2006