Hi Tomas, It is a Short action on this one. Hope this helps! Here's the full Specs - Specifications and Features:
American Built Arms HPR65C22SB--
6.5 Creedmoor--
Howa 1500 bolt action--
22" barrel--
Aluminum chassis, hard coat anodized--
10 round capacity--
11.5" free float KeyMod forearm--
Picatinny optics rail--
Black synthetic adjustable Urban Sniper stock--
SBR pistol grip--
Length of pull adjustable from 10.62" to 15.69"--
Black--
7.4 lbs

short action action length is determined by the cartridge. The 6.5 cred is a short action cartridge

SHORT action

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The 6.5 Creedmoor is a "Short Action" same as the 308 Winchester and takes the 208 Magazines.

Short