diff --git a/Content.IntegrationTests/AssemblyInfo.cs b/Content.IntegrationTests/AssemblyInfo.cs
index 76fc42f3a9..b8a88e2623 100644
--- a/Content.IntegrationTests/AssemblyInfo.cs
+++ b/Content.IntegrationTests/AssemblyInfo.cs
@@ -5,4 +5,4 @@
 // https://github.com/dotnet/runtime/issues/107197
 // So we can't really parallelize integration tests harder either until the runtime fixes that,
 // *or* we fix serv3 to not spam expression trees.
-[assembly: LevelOfParallelism(3)]
+[assembly: LevelOfParallelism(2)]
diff --git a/Content.Shared/Projectiles/ProjectileEmbedEvent.cs b/Content.Shared/Projectiles/ProjectileEmbedEvent.cs
index e7dd6df8e2..675549c9d0 100644
--- a/Content.Shared/Projectiles/ProjectileEmbedEvent.cs
+++ b/Content.Shared/Projectiles/ProjectileEmbedEvent.cs
@@ -4,4 +4,4 @@ namespace Content.Shared.Projectiles;
 /// Raised directed on an entity when it embeds into something.
 /// </summary>
 [ByRefEvent]
-public readonly record struct ProjectileEmbedEvent(EntityUid? Shooter, EntityUid Weapon, EntityUid Embedded);
+public readonly record struct ProjectileEmbedEvent(EntityUid? Shooter, EntityUid? Weapon, EntityUid Embedded);
diff --git a/Content.Shared/Projectiles/SharedProjectileSystem.cs b/Content.Shared/Projectiles/SharedProjectileSystem.cs
index 20d1e051a2..a1f277c036 100644
--- a/Content.Shared/Projectiles/SharedProjectileSystem.cs
+++ b/Content.Shared/Projectiles/SharedProjectileSystem.cs
@@ -94,11 +94,11 @@ public abstract partial class SharedProjectileSystem : EntitySystem
         EmbedAttach(embeddable, args.Target, args.Shooter, embeddable.Comp);
 
         // Raise a specific event for projectiles.
-        if (TryComp(embeddable, out ProjectileComponent? projectile))
-        {
-            var ev = new ProjectileEmbedEvent(projectile.Shooter!.Value, projectile.Weapon!.Value, args.Target);
-            RaiseLocalEvent(embeddable, ref ev);
-        }
+        if (!TryComp<ProjectileComponent>(embeddable, out var projectile))
+            return;
+
+        var ev = new ProjectileEmbedEvent(projectile.Shooter, projectile.Weapon, args.Target);
+        RaiseLocalEvent(embeddable, ref ev);
     }
 
     private void EmbedAttach(EntityUid uid, EntityUid target, EntityUid? user, EmbeddableProjectileComponent component)
diff --git a/Content.Shared/Weapons/Misc/SharedGrapplingGunSystem.cs b/Content.Shared/Weapons/Misc/SharedGrapplingGunSystem.cs
index d27efa4d76..c3c1509c7f 100644
--- a/Content.Shared/Weapons/Misc/SharedGrapplingGunSystem.cs
+++ b/Content.Shared/Weapons/Misc/SharedGrapplingGunSystem.cs
@@ -205,11 +205,11 @@ public abstract class SharedGrapplingGunSystem : EntitySystem
 
     private void OnGrappleCollide(EntityUid uid, GrapplingProjectileComponent component, ref ProjectileEmbedEvent args)
     {
-        if (!Timing.IsFirstTimePredicted)
+        if (!Timing.IsFirstTimePredicted || !args.Weapon.HasValue)
             return;
 
         var jointComp = EnsureComp<JointComponent>(uid);
-        var joint = _joints.CreateDistanceJoint(uid, args.Weapon, anchorA: new Vector2(0f, 0.5f), id: GrapplingJoint);
+        var joint = _joints.CreateDistanceJoint(uid, args.Weapon.Value, anchorA: new Vector2(0f, 0.5f), id: GrapplingJoint);
         joint.MaxLength = joint.Length + 0.2f;
         joint.Stiffness = 1f;
         joint.MinLength = 0.35f;