Hey guys, so I've put close to 400 rounds through my benelli m4 that I got last month. I finally did a complete break down and cleaning and when I reinstalled the trigger group I noticed that it flexes and has some play inside the receiver. It's not a lot, maybe a millimeter or two. I noticed in my supernova the trigger group is rock solid, so I was just wondering if this is normal, due to the nature of the quick disassembly features of the m4, or if I should get it checked out. Thanks guys.
Benelli m4 trigger group question
- Thread starter TK-Hryciuk
- Start date
F22_RaptoR
CGN Ultra frequent flyer
- Location
- Edmonton, Alberta
Mine moves up/down maybe a 1/4mm or so, but that's about it, if that's all yours does then it's fine, but any more and I'd say something is squirreley.
Is it fully locked in rearwards into the grip, and the takedown pin is through all the way?
Is it fully locked in rearwards into the grip, and the takedown pin is through all the way?
F22_RaptoR
CGN Ultra frequent flyer
- Location
- Edmonton, Alberta
Okay, just hold on a sec....
Which part EXACTLY is flexing or moving, the trigger GROUP (as-in the black aluminum part with the trigger guard, that contains all the trigger components and lifter), or ONLY the LIFTER (the gold-ish coloured part that lifts the shells)?
The lifter itself does have a couple mm of flex either side, so if it's lifter then there are no worries. It may flex more to one side than the other as one side has an extension on it and will be less likely to move to that side. Mine does this as well.
If it's the actual TRIGGER GUARD component, then send it to Stoeger Canada ASAP, your receiver is probably bent to snot! There should be absolutely ZERO left/right movement on it, maybe a 5/10,000th of an inch if anything at all! I'm going to go ahead and assume that it is NOT the trigger group, and only the lifter moving a little bit
This is exactly what it should look like:
So as before, if it's just the gold coloured lifter moving side to side then don't even worry about it anymore. The lifter on the supernova is much thicker and beefier as the gun has to content with 3-1/2" supermagnums to the parts are built a little more beefy.
No it is the aluminum trigger group itself that moves. I shoul reiterate, it doesn't move left to right in the receiver but rather tilts to the left, it is hard to explain without showing. But it moves slightly more into the receiver when I apply pressure to the left of the trigger group.
F22_RaptoR
CGN Ultra frequent flyer
- Location
- Edmonton, Alberta
Can you by chance take the trigger group out and post up pictures of the left/right side? And of the receiver itself with the trigger group in? (as I have shown above)
Have you taken the buttstock (for a fixed PG stock) of the tele-stock's pistol grip off at all? As the rear "tang" on the trigger group sits into the receiver and is held in place with the buttstock, if the pistol grip was taken off and not installed back tightly it could rotate along the axis of the takedown pin a little bit.
It should not be moving or rotating, or rocking at all though, ESPECIALLY rocking along the barral axis, does the receiver seem to be "opened" up at all? it should be perfectly strait back and forth on the inside and outside, do you have a strait edge or ruler you can use to judge how "flat" the sides of the receiver are?
It honestly sounds like something ain't right, there should be literally zero movement of the trigger group when it's in and the takedown pin is in place. From what you're describing, it sounds like the gun had an OOB detonation and bent the receiver... Is this a newly purchased gun or a buy off the EE or something? I can't find any way to make the trigger group in my M4 even so much as "wiggle" let alone rotate or rock in any direction at all. My gun has probably 2-3000 rounds of buckshot/slugs and target load through it.
If you can't take pics, I took some good images of mine so you can compare the trigger groups and see if anything is damaged looking or missing.
ETA
I would recommend NOT putting another round through that thing, you may have to send it back to Stoeger Canada anyways and have them look it over, unless it's just something silly I'm overlooking. Look over the pics of the trigger group I put up carefully, and make sure your trigger group is in the same condition, also check out how flat the receiver is and see if there is any bends or bulges in the receiver, there should NOT be the room for the trigger guard to rotate in any direction, except for along the takedown pin with the stock taken off.
Have you taken the buttstock (for a fixed PG stock) of the tele-stock's pistol grip off at all? As the rear "tang" on the trigger group sits into the receiver and is held in place with the buttstock, if the pistol grip was taken off and not installed back tightly it could rotate along the axis of the takedown pin a little bit.
It should not be moving or rotating, or rocking at all though, ESPECIALLY rocking along the barral axis, does the receiver seem to be "opened" up at all? it should be perfectly strait back and forth on the inside and outside, do you have a strait edge or ruler you can use to judge how "flat" the sides of the receiver are?
It honestly sounds like something ain't right, there should be literally zero movement of the trigger group when it's in and the takedown pin is in place. From what you're describing, it sounds like the gun had an OOB detonation and bent the receiver... Is this a newly purchased gun or a buy off the EE or something? I can't find any way to make the trigger group in my M4 even so much as "wiggle" let alone rotate or rock in any direction at all. My gun has probably 2-3000 rounds of buckshot/slugs and target load through it.
If you can't take pics, I took some good images of mine so you can compare the trigger groups and see if anything is damaged looking or missing.
ETA
I would recommend NOT putting another round through that thing, you may have to send it back to Stoeger Canada anyways and have them look it over, unless it's just something silly I'm overlooking. Look over the pics of the trigger group I put up carefully, and make sure your trigger group is in the same condition, also check out how flat the receiver is and see if there is any bends or bulges in the receiver, there should NOT be the room for the trigger guard to rotate in any direction, except for along the takedown pin with the stock taken off.
Sorry, I'm working off my phone and it's near impossible to post pics. I checked my receiver with a straight edge and everything looks good. Also, my trigger group sits completely flush in the receiver like yours. Can you take your gun and push against the bottom of the trigger guard itself under the trigger with your shooting finger like your going to fire it and let me know if it moves at all? It's only a small amount but like I said I am unsure if it is normal or not.
F22_RaptoR
CGN Ultra frequent flyer
- Location
- Edmonton, Alberta
Nothing at all, but it sounds like the pistol grip is moving on yours not the trigger guard itself.
Have you installed a sling plate or something on it? It may be your pistol grip is too loose and it's making it seem like the trigger group is moving around.
I un-screwed my tele-stock PG by one turn and pit it back together, and I can definitely see how it could be confused with the trigger guard moving. Don't force anything too much, but see if you can tighten the grip by one turn if you have the Tele-stock version, or for the solid-stock PG version you'll need to take the rubber buttpad off and use a screwdriver to tighten the screw from the backside...
Right now that's all I can think of, realistically even with the PG off the trigger guard should be solid in the receiver. From my pictures, you can see the longer "tang" at the rear the trigger group, and then a little "lug" directly above that. That nub locks into the receiver and should not allow any movement of it.
You can always give Matt Brown at Stoeger Canada / red Agencies a call and see if he's heard of this happening before? I have Red Agencies phone number if you need I can PM it to you.
And this gun is new and it is completely stock, no aftermarket parts at all. And I checked the PG and i can see the trigger group moving in the receiver. I noticed that the channel for the locking pin is slightly damaged on one side with the slip ring. It looks like the channel is damaged just enough for it to move on one side but not the other which would explain. I do not understand how this could be damaged but I am going to talk to the dealer I purchased it from.
F22_RaptoR
CGN Ultra frequent flyer
- Location
- Edmonton, Alberta
That seems like a good plan, if someone tried to mash in the takedown pin when the trigger group wasn't fully lined up, it could be damaged (it's definitely a PITA to get lined up, I used a flashlight to check it before I pushed the pin through ever time) and obviously that's the main part that secures the trigger group in place so any damage there could cause the trigger group to not stay securely in place. I was going to ask about any damage to the pin area but thought it was too unlikely to get damaged like that.
But it definitely sounds like a good idea to send it off to Stoeger to get it looked over by certified personnel, hopefully the dealer will send it back if an over the counter exchange is a no-go.
I take it you got my IM with Red Agencies contact info!
