Bullet Penetration in Counter-Strike: Source

This document aims to provide detailed information about what parameters affect the penetration depth of bullets from the various weapons in Counter-Strike:Source. This is a work-in-progress.

Rudimentary Results

The following table gives the shallowest depth of a sigle brush that completely blocks the incoming bullet. The brushes were six faced with dimensions 80x104xN and with each face set to the given material.

Weapon	glass/prodwndwa	tools/toolsblockbullets tools/toolsnodraw
Glock	21	9
USP	15	6
P228	25	10
Deagle	30	12
Elites	21	9
Five-Seven	30	12
M3	1	1
XM1014	1	1
Mac-10	15	6
TMP	20	8
MP5	21	9
UMP	15	6
P90	30	12
Galil	35	14
Famas	35	14
AK-47	39	16
M4-A1	35	14
Scout	39	16
SG 552	35	14
Aug	39	16
G3SG1	39	16
SG 550	35	14
AWP	45	18
M249	35	14

The results of this are somewhat troubling: Toolsblockbullets does not live up to its name. Even worse is the fact that nodraw is just as good at stopping bullets.

Dependence on SurfaceProperties.txt

Upon further testing, it has become clear that the penetration depth is depended on the "gamematerial" field of the surface property entry of the given material. Here is a table in order of stopping power of the gamematerials:

AWP inches	gamematerial	general description
18	"C"	concrete*
45	"Y", "G"	glass, metal grate

(testing in progress)

• Note surfaceprop "default" has gamematerial "C"

Thus nodraw, blockbullets, etc.. belong to gamematerial "C"