Circle Square Firearms sells firearms, ammunition, and related products. You must be at least 18 years of age to enter.
Some products and transactions may require additional verification and a higher minimum age (21 for handguns under federal law).
Fostech
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Prices and availability subject to change without notice. Product availability subject to applicable federal, state, and local laws.
The Echo Sport Trigger from Fostech provides the same pull-and-release firing functionality of the original Fostech Echo AR-II Trigger but the controls have been modified to eliminate the use of the 3rd safety selector position. Instead a control paddle in front of the trigger guard moves side to side to select single fire or Echo firing modes
