Amazing that even with the long action you had a 6lb 3oz rifle isn't it? The stock isn't a McMillan tactical stock but they are not too flimsy for hunting applications. In fact thousands of these things are successfully taking game every year without drooping between shooters fingers like a wet noodle.
Get out of here! You can't be serious..... anything plastic is sure to fail, not feel right, explode in your hands, or melt and whither away in your clutches.
