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Design Concepts bolt handles are pretty rare. I had one about eight years ago. Below are photos of it compared to a Carriercomp knob I had. The Design Concepts unit was the lightest bolt handle out there by a few grams. It was made entirely of titanium which meant the tip deformed over time. If you look at the close up photos of the tip, you can see how the material was deforming. The knurling wasn't as well defined as the carriercomp knob either. Knurling titanium is a pain in the ass to get just right. You often times see the tool smudging the material and not developing sharp points on the checkers.

Nice I was going to dig mine out for pics.Keep them in parts bin these days.Like I said before I prefer the new rx arms ones..Think I have two of each generation

You can polish the leading face of the shell stop with a Dremel and a polishing wheel. You end up removing the phosphate finish off of the tip in short order. This smooths out the transition from the shell to the tube quite a bit. J Kenny also sells a two piece billet shell stop that makes loading the Benelli a dream to load. The resistance is minimal to press the shell past the shell stop. You don't need the full kit with the modified shell elevator if you're just looking for improved loading characteristics. They take forever to get since they ship from England and their customer service is rather poor. My testing has been promising for the kit, but I'm still hesitant to outright recommend it yet. I'm not a huge fan of the button pad design, it's similar to the TTI pad that sticks out too far away from the receiver. https://www.j-kenny.com/product/2-piece-shell-latch-benelli-m2-by-j-kenny-co/

Picked up my new Benelli M4 on Friday that was shipped to my FFL and everything looked good after a brief inspection. I brought it home and assembled the shotgun when I noticed the collapsible stock was damaged. There’s a rather large 5 inch scratch on the bottom of the stock as well as a dent and with another mark to the right side. I contacted Benelli’s customer service and the woman I talked to said that it was pretty much my fault for not performing a proper inspection before it was transferred but she stated I could send the shotgun in and it might get fixed. She stated the current turnaround time for a new shotgun is a month. I know this is a combat shotgun and it’s going to get scratched and dinged, but I wasn’t expecting a $2k shotgun to already come like that from the factory. Am I overreacting or should I send it back to Benelli where it might get fixed? Thanks guys.

At 2k plus I'd be pissed and make them send you another .. F that!

personally I think that's absolutely BS LMT gets away with alot of this as well, every single lower / upper I have has some QC machining marks etc. Everyone says its fine and excuses it, probably how they get away with this bs in the first place.. actually it IS, how they get away with it. Have them send you a new one, thats ridiculous.. Imagine buying a new house, jewelry, piano, car or boat / vehicle and its all jacked up and its expected for you to just take it..

It wouldn’t be a deal breaker for me since it’s on the underside, but everyone is different. If you shoot it like it’s meant to be used, that will the minor blemish in the grand scheme of things. It still sucks no doubt, but do you want to be without if for a month or longer for a scratch? Only you can answer that question.

You may have not had it seated all the way for your first shot then. No spacers.

A friend actually gave me this 1983 mfg. imported via F.I.E. Miami, FL, NIB Franchi SPAS (Sporting Purpose Automatic Shotgun) with folding stock and infamous "hook" arm brace (way ahead of it's time) 10-12 years ago. It's definitely a cult firearm piece, glorified by it's highlights in Arnold Schwarzenagger "Terminator" movie. It took 10 years and $2500 for me to acquire all the known available "accessories", the last of which was the 2-piece muzzle "diverter" for $1300 in 2021, from the SPAS12.com site originator nonetheless. Several years ago I balked @ $500 for the device, bad non-purchase. It's one heavy and clumsy gun to manipulate. Importantly there was a Safety Recall in 1991 regarding the original "lever" style safety lever that would, without warning, discharge the firearm while toggling the lever from ON-OFF / OFF-ON position; a good time to emphasize the primary safety on any firearm is muzzle direction. My Franchi SPAS 12 (Sporting Purpose Automatic Shotgun) has a 21.5" barrel, SPAS 12 external muzzle thread protector, folding stock, 8 round magazine = pre-ban SERIAL NO. AL XXXX DATE CODE “AL”=1983 Imported by F.I.E. , Miami FL - collector desirable. pump / semi-auto modes. The pump mode was for cycling low powered rubber tip riot cartridges. First year mfg 1979. (1994 assault weapons ban) Removable magazine restriction plug, FIE scope mount, Vario-Mix choke tubes (cylinder, modified, full choke), sling, "hook", muzzle “diverter” device paid $1300 in 2021 for this 2-piece accessory Trigger guard “lever” safety (Safety Recalled in 1991; factory replaced recalls with the cross-bolt trigger group. SAFETY MALFUNCTION DEMONSTRATED: https://static.wixstatic.com/media/0cdaa4_952e6a62edc84135a0113b9964845d33~mv2.gif I authored an Anatomy Series Manual on the differences between the Lever / Cross Bolt safety trigger groups available that also details how the safety malfunction occurs and the factory resolution using the same lever trigger groups! A bit of musing on the "muzzle device" and it's parallel development in the armed forces follows. A variety of shotgun muzzle devices have been tried over the years to enhance their effectiveness in a defensive role. One item that comes off often is "Duck Bill Spreaders" most seem to originate in the early 70's. Crane Lake is often cited as were their origin and cited has being used by the SEAL's in Vietnam and by the Air Force Security Forces. In each case they are cited as being regulated for use with #4 buck shot. Relative reference manuals from the early 70's reveals #4 buckshot was the preferred load for LE-military shotguns. Crane Lake is often cited as such prototype muzzle devices used by the SEAL's in Vietnam and the Air Force Security Forces. A&W muzzle in "The Police Shotgun Manual", by Roger H. Robinson, 1973. Mr. Robinson includes many high speed photos that were provided by A&W Engineering of shot loads coming out of the A&W duck-bill device; photos show the diverter to be very efficient at pattern modification. At 10 yards a 7 1/2" H x 29" W pattern with #4 At 30 yards a 25" H x 96" W pattern with #4. A claimed a 22% reduction in recoil an diminish the muzzle flash to that of a .38 special at night. A slug can be used as well, imparting two grooves on either side of the slug with a reduction in projectile yaw. According to Swearengen in _The World's Fighting Shotguns, the US Air Force Directorate of Security Police in the mid-1960s developed a requirement for a spreader choke that would produce a wide elliptical shot pattern. This horizontal pattern spread was supposed to increase the hit probability from a shotgun on a moving target. The Air Force request went to Frankford Arsenal for action, at the time Frankford was working on improvements to the military shotgun in general. Early experiments at producing a spreader choke were less than successful- the chokes split, patterned poorly and in various ways failed to produce te desired result. Ultimately Frankford ordnance engineer Charles A Greenwood developed the duckbill choke in answer to the Air Force requirement. It was subjected to a good deal of laboratory and field testing. The original duckbill choke was simply a sleeve with a long V-notch cut on either side, the apex of the V toward the rear. The top and bottom of the sleeve were compressed toward the centerline at the muzzle, constricting the emerging pattern of shot in the vertical plane and forcing it to spread horizontally. The sleeve was permanently brazed onto the barrel so that it would not be blown off or rotated by firing the gun. Early examples of duckbill- equipped shotguns were deployed to Vietnam in the hands of Marines and Navy SEALs. It was found that the open V- notches in the muzzle of the duckbill hung up badly on vegetation as the shotgunner tried to move through thick growth, so the duckbill was modified with a ring around its muzzle to exclude vines and branches. It was discovered that the spreader device worked as advertised, but in reality what was needed in a fighting shotgun was a way of producing dense, lethal patterns. Spreaders in field testing produced patterns five feet high and twelve feet wide at 30 meters with #4 buckshot loads. At 40 meters, patterns were six feet high and sixteen feet wide. At 40 meters an average sized man would only be hit by a couple of pellets. But with a standard cylinder bored barrel shooting approximately a four- foot circular pattern at 40 meters, some 60% of the shot would strike an average man- sized target. Still, the duckbill choke had its adherents, among SEALS especially. Development on the idea continued for several years. Clifford Ashbrook and Wilson Wing of Kexplore, Inc. in Houston, TX developed the A&W Diverter in the late 1960s using mathematical concepts, and received patent protection (# 3,492,750) in February 1970. The HK 512 gas operated 7+1 shotgun, it was manufactured by Franchi for HK under a contract to supply an elite force in Germany (GSG9), i.e. the "Anti-Terrorist Shotgun" . A production over run of 270 units which were imported into the US, employing a shot diverter that creates a rectangular spread .

Pretty decent price compared to my local shops

Ammoseek is your friend - https://ammoseek.com/ammo/12-gauge?ss=00-Buck&sl=2 3%2F4

In a world where I can order flite control buckshot offline for $1/rd, I'd not buy range 00.

I am very pleased with my FFT rail and ADM Ti mount combo so far.

Outstanding pictures! Thanks for putting this together. I had a question about the link on the back of the M4's bolt carrier. When you remove them, do you do anything to replace the stake marks?