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Since the launch of the SA-4 and SA-2 in 2013, sales have been consistently strong. Originally designed around magazine capacity limits for the Canadian market, 2013 saw changes in US legislation at the state level boosting sales in this market. Our couplers are designed to couple the LAR-15 magazines together, in pairs with the SA-2 and quads with the SA-4.

SA-2 and SA-4 couplers

The SA-2 and the SA-4 by Sentinel Armoury

Thank you everyone for your patience, we now have fully enabled online sales. In order to serve our Canadian and International customers we have posted links on our BUY NOW page relevant to your location and applicable taxes.

DEALERS please email us for bulk pricing. We have orders coming in from all over, and where possible we prefer to enable our dealer network. We always try and ask our customers who their preferred dealers are, and then we follow up inviting that dealer to stock our units.

Big Canadian welcome to our new customers in the USA. Please contact us via email ( for prices including shipping.