He got upset and said that he was going to take it back. After much deliberation, I opted not to offer him a couple of hundred dollars for it what can I say, honesty hurts some times. I told him I believed it was the ammo's fault and not the gun's. I had a box of high velocity 5 loads I dug out of the tool box and I let him run a few tubes of it through his gun and it ran without a hitch. I found a few threads on the forum about the topic, but break-in periods varied between 50 rounds and 1, rounds of high velocity buck and slug loads.
What would be a reasonable figure to tell him to break it in? Will a shotgun such as this ever run low veloity bird loads reliably? My M4 loathed being run dry when new.
It also needed about four boxes of full power 4 buck to break it in. It'll fire about anything now without a hiccup. Threw combination of about rounds of buckshot, slugs, birdshot downrange.
Now it will shoot anything without any issues, even 1oz 8's for trap. I had zero issues with my Benelli M4 out of the box. Before I shot it, I stripped it down, and I took care to lubricate the bolt, bolt carrier, chamber, bore and the inside of the receiver with some Slip EWL. I still clean it and lubricate it after each time I shoot without any issues.
I've never had a malfunction at all after rounds I don't get to shoot it enough. I think it took me about rounds. If I remember correctly I broke it my M4 with 50 rounds of Winchester 2. I lubed the gun with the supplied Factory lube and never have a malfunction.
It has to be fought for and defended by each generation. OP, remind your friend that the M4 is a combat shotgun and not a skeet gun or a quail gun and was not designed for those light loads. This half the gun has weathered very well. It had the 4 port barrel to begin with. The pistons battered the shit out of the old BCG to the point that it wouldn't retract all the way to the rear. The rails were mushroomed out. So Benelli warrantied the barrel, handguards and BCG.
So I got pretty much a brand new gun out of the deal. Since then, there have been absolutely no problems with the M4. The design is very well thought out. The pistons float in the ARGO.
As well as the rear handguard mount. The pistons are limited in how far they can protrude inward due to a stop that is on the barrel. Most of the wear around the front of the receiver is from where the barrel seats against it. This is my current config which I haven't tested yet. Hopefully later today.
Pistol grip activated Scout Light. Next stop, Ti tube, Aimpoint T-1 and subdued desert paint. Quoted: This half the gun has weathered very well.
It's a Sidearmor mount. It still isn't a true spec top or side rails though. The reason for this is due to iron sight obstruction. The rail sits slightly higher than the factory rail due to the base of the top rail. I like the Sidearmor unit because it uses the factory handguards. They're far more comfortable than some of the aftermarket offerings I've tried. The only potential downside is there is no bottom rail. I have no use for one anyway, but others might.
This is my remote light switch. It took a 40" Surefire tape switch to get here. The switch is just beneath the rubber grip. It took quite a bit of work and planning to get it in there cleanly. The rubber grip is slip fit onto the stock. It slides over the switch.
Scout Light in a LaRue mount. The cable routed along the top rail and ziptied to the ladder rail covers. The ladder rails have been placed temporarily. Then I'll cut the ladder rails to the proper lengths. The front sling mount is a Daniel Defense indexing mount. This is far more comfortable than the factory front sling mount. One of the best features is the sling no longer gets in the way of the handguard.
I'm using a Gear Sector 2 point sling. The shell carrier is produced by SideArmor. It attaches to their top rail via two screws. So it is easy to remove if you don't want to run with it. They only offer a 4 shell mount. The shells are retained via a spring loaded detent system. The shells are much easier to remove and put in than the Mesa shell carrier I tried a few years ago.
There is nothing to wear out either. The Scout Light is probably the best weapon light I have ever used. It's extremely small, light weight and puts out a lot of light. As you can see on this photo, it is mounted high, so it is out of the way of your hands on the handguard.
What I hated the most about the Surefire M80 rail system was it put whatever you mounted right where your hand was meant to be to control the weapon. SideArmor offers long and short side rails. I use two short rails to reduce weight and to minimize the obstruction to the handguard area.
My left side mounts my sling mount. The right side mounts the light. This photo shows the natural position of my hand relative to where the sling rides.
This side shows how close the cable is to my hand. Normally, I hate tape switches. Mainly due to poor implementation. However, running the setup so the light is activated similar to a crimson trace laser grip is amazing. I can adjust the pre-load on the button to get the proper feel that I want on the grip. It's not a hair trigger, and it doesn't take all my strength to press it.
The switch was cut deep enough so it is in a recess. So laying the shotgun down has little chance of activating the light. In reality, I'm approximately 1.
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