diff --git a/src/shared/NSWeapon.h b/src/shared/NSWeapon.h
index 397ebc59..f0c4eb0c 100644
--- a/src/shared/NSWeapon.h
+++ b/src/shared/NSWeapon.h
@@ -197,6 +197,7 @@ private:
 	string m_strLastFireInfo;
 	float m_jointTrailWorld;
 	float m_jointTrailView;
+	float m_flSpeedMod;
 
 	/* cached fireInfo */
 	string m_fiDetonateOnFire;
diff --git a/src/shared/NSWeapon.qc b/src/shared/NSWeapon.qc
index 3f08fd9b..da427995 100644
--- a/src/shared/NSWeapon.qc
+++ b/src/shared/NSWeapon.qc
@@ -40,6 +40,7 @@ NSWeapon::NSWeapon(void)
 	m_flFireRate = 1.0f;
 	m_dState = 0;
 	m_strLastFireInfo = __NULL__;
+	m_flSpeedMod = 1.0f;
 }
 
 void
@@ -547,6 +548,13 @@ NSWeapon::_CacheWeaponDefVariables(void)
 	string muzzleModel;
 	string ammoRequired;
 
+	/* movement vars */
+	m_flSpeedMod = GetDefFloat("speed_mod");
+
+	if (m_flSpeedMod <= 0.0) {
+		m_flSpeedMod = 1.0f;
+	}
+
 	/* string lookups can be expensive if done too often
 	   so we'll need to cache them whenever something
 	   big in the game state changes. like a save/load. */
diff --git a/src/shared/player_pmove.qc b/src/shared/player_pmove.qc
index dadb0811..17d0a693 100644
--- a/src/shared/player_pmove.qc
+++ b/src/shared/player_pmove.qc
@@ -418,6 +418,11 @@ NSClientPlayer::Physics_MaxSpeed(void)
 	float crouchSpeed = g_pmoveVars.pm_crouchspeed;
 	float walkSpeed = g_pmoveVars.pm_walkspeed;
 	float proneSpeed = g_pmoveVars.pm_pronespeed;
+	float speedMod = 1.0f;
+
+	if (m_activeWeapon) {
+		speedMod = m_activeWeapon.m_flSpeedMod;
+	}
 
 	if (CanSprint() && IsSprinting()) {
 		if (m_flStamina < maxStamina) {
@@ -439,7 +444,7 @@ NSClientPlayer::Physics_MaxSpeed(void)
 		wishSpeed = walkSpeed;
 	}
 
-	return wishSpeed;
+	return wishSpeed * speedMod;
 }
 
 void