TY  - BOOK
AU  - Jacobellis, Nick.
TI  - 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
SN  - 0893-8989
U1  - DPer 363.205 P75 Sept 2013-May 2016 v. 37 & 40, n. 9-11/1-5  
PY  - 2013///-May 2016
CY  - California
PB  - Bobit Business Media, 
KW  - Firearms
N1  - Police: the law enforcement
ER  -