The Spec Ops M4 ftype older is said to be a tad too short folded. This one has a spring in the handle, not in the stock. It slides open and closed M4 style. So I was thinking that the PVC would prevent it from becoming too compact with a 12.5inch. I believe this model does not compress when shot, but I could be wrong.
I see - so you mean you want to force the stock to stay longer.
Can't see how that would be a problem, if it was a PERMANENT mod. Like pinning a mag.
But are you sure? It seems to me like it should be long enough without doing that. Even collapsed it's a decent length. How short is it? Could you put a slightly larger recoil pad on it?


















































