na-adjective
unavailable; out of stock; unobtainable
Used for items that cannot be acquired, typically because they are sold out, discontinued, or otherwise not obtainable.
この商品は現在入手不可です。
This product is currently unavailable.
限定版はすでに入手不可
The limited edition is already unobtainable.
Compound of 入手 (にゅうしゅ, 'obtaining') and 不可 (ふか, 'impossible'). The reading follows standard on'yomi.