diff --git a/reapi/extra/amxmodx/scripting/include/cssdk_const.inc b/reapi/extra/amxmodx/scripting/include/cssdk_const.inc
index 01afb258..844f0a08 100644
--- a/reapi/extra/amxmodx/scripting/include/cssdk_const.inc
+++ b/reapi/extra/amxmodx/scripting/include/cssdk_const.inc
@@ -147,35 +147,36 @@
 /**
 * Break Model Defines
 */
-#define BREAK_TYPEMASK                  0x4F
 #define BREAK_GLASS                     0x01
 #define BREAK_METAL                     0x02
 #define BREAK_FLESH                     0x04
 #define BREAK_WOOD                      0x08
 
-#define BREAK_SMOKE                     0x10
-#define BREAK_TRANS                     0x20
+#define BREAK_SMOKE                     0x10    // generates black floating particles from shards
+#define BREAK_TRANS                     0x20    // transparent shard flag (use with any of BREAK_TYPEMASK)
 #define BREAK_CONCRETE                  0x40
 #define BREAK_2                         0x80
 
+#define BREAK_TYPEMASK                  BREAK_GLASS|BREAK_METAL|BREAK_FLESH|BREAK_WOOD|BREAK_CONCRETE
+
 /**
 * Colliding temp entity sounds
 */
-#define BOUNCE_GLASS                    BREAK_GLASS
-#define BOUNCE_METAL                    BREAK_METAL
-#define BOUNCE_FLESH                    BREAK_FLESH
-#define BOUNCE_WOOD                     BREAK_WOOD
-#define BOUNCE_SHRAP                    0x10
-#define BOUNCE_SHELL                    0x20
-#define BOUNCE_CONCRETE                 BREAK_CONCRETE
-#define BOUNCE_SHOTSHELL                0x80
+#define BOUNCE_GLASS                    BREAK_GLASS     // "debris/glass%i.wav", Com_RandomLong( 1, 4 )
+#define BOUNCE_METAL                    BREAK_METAL     // "debris/metal%i.wav", Com_RandomLong( 1, 6 )
+#define BOUNCE_FLESH                    BREAK_FLESH     // "debris/flesh%i.wav", Com_RandomLong( 1, 7 )
+#define BOUNCE_WOOD                     BREAK_WOOD      // "debris/wood%i.wav", Com_RandomLong( 1, 4 )
+#define BOUNCE_SHRAP                    0x10            // "weapons/ric%i.wav", Com_RandomLong( 1, 5 ) NOTE: unreachable
+#define BOUNCE_SHELL                    0x20            // "player/pl_shell%i.wav", Com_RandomLong( 1, 3 ) 
+#define BOUNCE_CONCRETE                 BREAK_CONCRETE  // "debris/concrete%i.wav", Com_RandomLong( 1, 3 )
+#define BOUNCE_SHOTSHELL                0x80            // "weapons/sshell%i.wav", Com_RandomLong( 1, 3 )
 
 /**
-* Temp entity bounce sound types
+* "Brass" message and TE_MODEL soundtype
 */
-#define TE_BOUNCE_NULL                  0
-#define TE_BOUNCE_SHELL                 1
-#define TE_BOUNCE_SHOTSHELL             2
+#define TE_BOUNCE_NULL                  0 
+#define TE_BOUNCE_SHELL                 1 // gun shell, sound is BOUNCE_SHELL
+#define TE_BOUNCE_SHOTSHELL             2 // shotgun shell, sound is BOUNCE_SHOTSHELL
 
 /**
 * Spectating camera mode constants
diff --git a/reapi/include/cssdk/common/const.h b/reapi/include/cssdk/common/const.h
index 8350e8ae..5437e5b2 100644
--- a/reapi/include/cssdk/common/const.h
+++ b/reapi/include/cssdk/common/const.h
@@ -667,31 +667,32 @@
 #endif
 
 // Break Model Defines
-#define BREAK_TYPEMASK              0x4F
 #define BREAK_GLASS                 0x01
 #define BREAK_METAL                 0x02
 #define BREAK_FLESH                 0x04
 #define BREAK_WOOD                  0x08
 
-#define BREAK_SMOKE                 0x10
-#define BREAK_TRANS                 0x20
+#define BREAK_SMOKE                 0x10    // generates black floating particles from shards
+#define BREAK_TRANS                 0x20    // transparent shard flag (use with any of BREAK_TYPEMASK)
 #define BREAK_CONCRETE              0x40
 #define BREAK_2                     0x80
 
+#define BREAK_TYPEMASK              BREAK_GLASS|BREAK_METAL|BREAK_FLESH|BREAK_WOOD|BREAK_CONCRETE
+
 // Colliding temp entity sounds
-#define BOUNCE_GLASS                BREAK_GLASS
-#define BOUNCE_METAL                BREAK_METAL
-#define BOUNCE_FLESH                BREAK_FLESH
-#define BOUNCE_WOOD                 BREAK_WOOD
-#define BOUNCE_SHRAP                0x10
-#define BOUNCE_SHELL                0x20
-#define BOUNCE_CONCRETE             BREAK_CONCRETE
-#define BOUNCE_SHOTSHELL            0x80
-
-// Temp entity bounce sound types
+#define BOUNCE_GLASS                BREAK_GLASS         // "debris/glass%i.wav", Com_RandomLong( 1, 4 )
+#define BOUNCE_METAL                BREAK_METAL         // "debris/metal%i.wav", Com_RandomLong( 1, 6 )
+#define BOUNCE_FLESH                BREAK_FLESH         // "debris/flesh%i.wav", Com_RandomLong( 1, 7 )
+#define BOUNCE_WOOD                 BREAK_WOOD          // "debris/wood%i.wav", Com_RandomLong( 1, 4 )
+#define BOUNCE_SHRAP                0x10                // "weapons/ric%i.wav", Com_RandomLong( 1, 5 ) NOTE: unreachable
+#define BOUNCE_SHELL                0x20                // "player/pl_shell%i.wav", Com_RandomLong( 1, 3 ) 
+#define BOUNCE_CONCRETE             BREAK_CONCRETE      // "debris/concrete%i.wav", Com_RandomLong( 1, 3 )
+#define BOUNCE_SHOTSHELL            0x80                // "weapons/sshell%i.wav", Com_RandomLong( 1, 3 )
+
+// "Brass" message and TE_MODEL soundtype
 #define TE_BOUNCE_NULL              0
-#define TE_BOUNCE_SHELL             1
-#define TE_BOUNCE_SHOTSHELL         2
+#define TE_BOUNCE_SHELL             1       // gun shell, sound is BOUNCE_SHELL
+#define TE_BOUNCE_SHOTSHELL         2       // shotgun shell, sound is BOUNCE_SHOTSHELL
 
 // Rendering constants
 enum