Jacobellis, Nick. <br/><br/>
Glock G21 gen 4 pistol:  a captive dual recoil spring and modular back straps make this .45 ACP easy to shoot and keep on target/ 
Nick Jacobellis. 
 - California:  Bobit Business Media,   ŠSept 2013-May 2016. 
 - v37 n11, pages 18-20;  illustrations:  27 cm. 
<br/><br/> Police: the law enforcement. 
<br/><br/><label>ISSN: </label>0893-8989 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Firearms.
<br/><br/><label>Dewey Class. No.: </label>DPer 363.205 P75 Sept 2013-May 2016 v. 37 & 40, n. 9-11/1-5