I bought a Bren kit

[GUTS]

Do I have this handle on correctly?

[Brit plumber]

Can you post a photo of your bolt carrier and slide in the same way I posted mine? It appears yours is correctly assembled so the fault is with the parts.

[WallyG.]

How clean is the interior surface of the receiver at the torch cuts?? All slag should be filed smooth with the receiver inside side walls and the channels cut in the receiver for the butt slide and mag well cover should be clear... when such clean-up was achieved all of my internals have functioned as designed... Sometimes the torch cutting will heat things up and the receiver sides will flow into new positions... (warp or spread) so how difficult is it to slide the upper receiver sections onto the slide? They should go on and off without any real force needing to be applied. If tight... look for slag in the channels that might be spreading the receiver walls enough to cause the handle to ride over the carrier's catch surface... also what sequence of inserting the internals was used? Is the rear of the bolt carrier (protruding catch) possibly in front of the cocking handle slide when the bolt is all of the way forward? Do you have the recoil springs in place that would pressure load the internals? Install the cocking handle in the receiver first and then slide the bolt carrier into the receiver from the rear... sometimes I remove the front sections of the receiver and slide the rear two sections forward (while still on the butt slide) and insert the carrier... then slide all receiver sections rearward to the proper locations. But a picture of your internals would really help as stated.

[GUTS]

Thanks fellas, I got it, the bolt carrier was not going all the way forward so there was nothing to pull back.