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AR15.COM
2/19/2026 12:49:31 PM EDT
Anyone have a bead on threaded barrels for the full size? I did an oopsie and bought the 4.0 version from Springfield in January, and after it was delivered and I realized my mistake, I haven't yet found a 4.5 one in stock.

That was my stupidity.
2/19/2026 6:06:14 PM EDT
[#1]
Clearly this means you need to buy one of the new 4.0FC models that uses the full size grip length with the 4.0 slide, 19X-style.

A lot of places like Midway, Grabagun, Palmetto, Midwest Gunworks all list it.  Your best bet is to setup stock notifications and grab it whenever it shows up at a price you like.  HS Produkt shipments seem to come in batches, feast and famine.
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