Springfield armory xd - . 45 packs punch! | arms guide, Springfield armory’s xd-s .45 is a bad ass carry gun in a sleek, small package. the xd-s packs 6 rounds of .45acp into a 21.5 oz firearm. with dimensions smaller. Going dark side - springfield armory xd-9, Review of the springfield armory xd-9 tactical pistol. Springfield armory introduces xd- 4.0 | arms guide, Last year, springfield armory debuted a 9mm counterpart as a follow up to their popular single stack .45, the xd-s. this year, at shot show 2014, sa introduced its.