FONZ

Hello all, I experience the same problem as in thread:"Locking head Retaining pin is breaking" but on a R1 300WM: The locking head retaining pin broke twice. I have read the posts of this thread but can not locate the "plastic, forked looking block in the back of the receiver". (or is it not there for a 300WM?) Can somebody give me the part ref number (see pictures) Thanks for helping. Fonz

Dear Gunny or Joela, I experience the same problem on a R1 300WM: Locking head retaining pin broke twice. I have read the posts here but can not locate the "plastic, forked looking block in the back of the receiver". Can you give me the part ref number (see pictures) Thanks for helping.

It took me longer than expected. All parts were replaced succesfully without problems (it is also necessary to replace the gas collector as the inside IS different and adapted to the new cylinder and guide pin). THe most time consuming is to remove the red paint from the eight screws holding the collector to the barrel. This was done with aceton and ear-sticks + a needle to remove the paint out of the torx-groves. Before to unscrew the screws, they were heated to about 300°F to weaken the loctide (I used a hot air-gun but a propane torch can also be used). Using a good quality torx handle immediately after heating the screws came out without problem. The other parts of the kit were replaced in less than 10 minutes and now the ARGO is an ARGO E (endurance). The little setscrew on the collector is used to keep the inside in place. For the info also a picture of the partsof the update kit and a 3th picture showing the damaged parts. [ATTACH=CONFIG]2522[/ATTACH][ATTACH=CONFIG]2523[/ATTACH][ATTACH=CONFIG]2524[/ATTACH]

I would recommend first pulling the bolt back to releasing tension before to pull the release down. Not doing so will cause excessive wear and as you say...some day cause it to fail faster as expected.

The "recoil-brake" looks graet. Mine R1-300WM has a standard barrel lenght of 21 Velocity should not be a concern. [ATTACH=CONFIG]2459[/ATTACH]

I will post some info/experience when the job is done. I have all parts except the BARREL LOCK FOLLOWER ASSEMBLY which is on the way to me. The new parts appear inded to be more hardened and will resist to corrosion much better. Planetcat, thanks for your support.

I hope the eight torx screws will come off before the inside of the screws start to "round off". I will do as you recommend (good quality tool and vise) but from your experiece it seems doable. I have one more question. Do you know the functionality/purpose of the little setscrew near the inlet-hole of the gas collector? I suppose it stays in place during mounting of the collector?. (picture) [ATTACH=CONFIG]2458[/ATTACH]

I want to replace the gas piston assembly on my Benelli R1. The old style piston assy is no longer available and the update kit also includes a new gas collector cylinder that needs to go onto the barrel with eight locking screws. Does someone have info/experience how to mount the new collector cylinder onto the barrel? Is this new cylinder identical to the one in the old design? the new kit is available at numrich: https://www.gunpartscorp.com/Products/1426700.htm