ASAI ONE PRO 45 PISTOL - NRA Museum

1 ANimpeccable setof credentialsbacks the newOne Pro 45 by Martin Tuma for AdvancedSmall Arms Industries (ASAI) in Solothurn,Switzerland, it is manufactured by Oerlikonin Zurich, Switzerland and imported byMagnum Research of Minneapolis,Minnesota. Tuma was responsible for theSwiss-made Sphinx AT 88 and AT 2000 CZ-75-based pistols, and that lineage is appar-ent in many respects. In the One Pro 45, wehave legendary Swiss precision and atten-tion to detail fused to yankee sales and mar-keting initially at meeting thedemanding requirements of SpecialOperations Command units, the OnePro 45 PISTOL will no doubt find favorwith civilian fans of big-bore double-action semi-automatic pistols.

2 The One Pro45 combines provenshort-recoil operation,all-steel construction andlarge caliber with a mod-ern single-action/doubleaction trigger, a frame-mounted decocking leverand a patented, automaticfiring pin and service lifeare enhanced by the full-length rails interior onthe frame and exterior onthe slide and the slideand frame of chromium-nickel-molybdenumsteel. A double-action-only trigger is optional, asis a lightweight modelwith an alloy barrel rises tolock against the rear of theejection port and unlocksby dropping is no pivoting bar-rel link. Locking andunlocking are controlled by cam surfacesmachined into the lower part of the barrelacting on the slide stop pin.

3 The hole for thebarrel in the front of the slide is drilled at adownward angle which assures a tight lock-up to the barrel even after many is no barrel bushing and a full-length,steel guide rod is used along with a multi-strand, braided recoil spring. A slot cutinto the right face of the breech incor-porates a robust extractor, and thisslot holds the rim of the cartridge asit is released by the white-dot sight system is stan-dard. The front blade has one white dotwhile there are white dots on either sideof the rear notch. The rear is drift-adjustable for windage. Both sightsare mounted in large, wide dovetailscut into the top of the slide.

4 There isa wide but shallow rib on top of checkered areas are castinto the front strap and backstrap,like on the Sphinx guns, to assistgripping. They worked well without chaf-ing. The smooth trigger is mounted inside a The American Riflemanhas used the phrase DopeBag at least since 1921, when Col. Townsend Whelenfirst titled his column with it. Even then, it had been inuse for years, referring to a sack used by target shoot-ers to hold ammunition and accessories on the firingline. Sight dope also was a traditional marksman s termfor sight adjustment information, while judging windspeed and direction was called doping the wind.

5 CAUTION: Technical data and information con-tained herein are intended to provide information basedon the limited experience of individuals under specificconditions and circumstances. They do not detail thecomprehensive training procedures, techniques andsafety precautions absolutely necessary to properlycarry on similar activity. Read the notice and disclaimeron the contents page. Always consult comprehensivereference manuals and bulletins for details of propertraining requirements, procedures, techniques andsafety precautions before attempting any similar RIFLEMAN June 1998 ASAI ONE PRO 45 ACPVel.

6 @ 15' Smallest Largest AverageCartridge( )(ins.)(ins.)(ins.)Federal GM45B765 FMJ SWC11 SdWinchester X45 ASHP2905 SHP18 SdHornady 9112845 JHP XTP9 SdAverage Extreme Cor-Bon CartridgeCor-Bon1385 JHP18 SdCor-Bon1315 JHP21 SdCor-Bon1280 JHP10 SdAverage Extreme consecutive five-shot groups from 25 yds., fired from sand-bags. Abbreviations: JHP (jacketed hollow point), FMJ (full metaljacket), SWC (semi-wadcutter), SHP (Silvertip hollow point),XTP (extreme terminal performance)ACCURACY RESULTSThe Swiss-Made One Pro 45 pistolcombines short-recoil operation withall-steel construction. By simplyswitching barrels, the One Pro 45 mayfire either.

7 45 ACP or .400 slide is of all-steel construction and thepistol has full-length rails on both slide andframe to enhance service life and that is generous enough for a glovedfinger and is not recurved or magazine release button is on theframe to the rear of the trigger guard , andpressing it inward instantly dropped even anempty magazine clear. The foot of the mag-azine well is beveled for easier reloading. ASAI claims that the One Pro 45 willfind favor among shooters with small the double-column magazine, wefound the girth of the grip frame remainedcomfortable for the small handed. Shootingcomfort is enhanced by a slight recurve atthe bottom of the grip frame and recurvedmagazine floorplate extensions.

8 Stocks aretwo-piece molded, black polymer with alightly marbled outer PISTOL has a decocking feature, andpressing the the decocking lever downwardlowers the hammer while preventing con-tact with the firing pin. A large, intermedi-ate sear notch engages the hammer, keepingit well off the firing pin while an automaticfiring pin safety prevents move-ment of the firing pin unless thetrigger is One Pro 45 was fired foraccuracy, with the results foundin the accompanying table, andfunction fired with Cor-Bon,Federal,Hornady andWinchester ammunition. Therewere no failures of any of the box, the One Pro45 offered one of the best trig-ger pulls in memory for a fac-tory PISTOL .

9 Single-action pullswere light and crisp with verylittle slack or creep. Double-action pulls were of moderateweight with linear loading and a pre-dictable, crisp let-off. No doubt accuracywas enhanced by the excellent qualities ofthe befits a serious, self-defense PISTOL ,the finish of the One Pro 45 is all parts are finished with a low-polishblue that imparts a semi-matte, nonreflect-ing finish. Unlike other guns, there are noin-the-white polished parts on the One Pro45. Even the barrel, trigger, and hammerare blued. Picking up the One Pro 45 leaves a com-fortable impression. Yes, the gun is heavy,but the stocks feel good, the gun balanceswell and the levers are within easy levers are available mounted on the rightside of the frame for left-handed shooters atno additional cost.

10 Operation proved simi-lar to other modern, double-action pistolsand disassembly was particularly easy andrequired no the One Pro 45 proved anenjoyable experience. This PISTOL is com-fortable to shoot with notably low perceivedrecoil even with +P loads because of itsheavy weight, heavy slide and comfortablegrip. By using a heavy slide, the rating ofthe recoil spring can be reduced, making iteasier to operate the slide when charging orclearing the gun. Some shooters felt the OnePro 45 was modestly top heavy. As a sug-gestion, they recommended undercuttingthe rear of the trigger guard about 2 mmwhere it joins the frame to lower the pistolin the hand slightly.