I went to look at one of these at the weekend. What a truly shody construction. The bolt was loose at both ends, rattled and had lots of free lateral free play. Sliding the bolt forward was akin to parking a shopping trolly back into the back of another trolly. Such a piece of carp coming out of a large manufacturer is simply unforgivable.
I also tried the synthetic version where the bolt handle interferes with the hand on the pistol grip and restrict operation of the trigger.
Needless to say I wont be buying one.