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yes it can it has a threaded barrel you will need a adapter https://www.waltherarms.com/handguns/colt-rimfire/government-1911-a1/

here is a adapter https://www.ebay.com/itm/Colt-Walther-Umarex-1911-22-LR-Thread-1-2-x-28-TPI-Adapter-/302265436614?hash=item46606c89c6

Matthew, yes, this pistol has a Muzzle Thread Metric 8x.75mm. An adapter for the more common Suppressor Models is here : https://www.infiniteproductsolutions.com/sale-category/m8-x-75-to-1-2-28-rh-thread-adapter/