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TriStar Cobra Force Shotgun Review In this part of the review, I will show detailed photos of all the parts and assemblies of the TriStar Cobra Force Pump Shotgun and discuss some of the internal features. I have provided many photos and they should give you a good idea on the details of the shotgun.
Chokes The TriStar Cobra Force Shotgun comes with two choke tubes and are the Beretta / Benelli style interface. Both chokes are cylinder bore chokes. The flash hider choke will add about 2.05" in length to your shotgun and is installed by hand. The flared flash hider portion of this choke measures 1.06" for the outside diameter. The standard choke is flush with the end of the barrel when installed and requires a choke key (provided) for installation and removal. Barrel The barrel is manufactured using a drilling method and is made of 4140 steel. The front sight is removable but is shown on the barrel in these photos. There was a drip in the blued finish on the right side of the barrel. The magazine lug is attached to the lower surface of the barrel and includes the forward sling swivel stud. I was not able to find any proof marks on the barrel assembly. The reason I say barrel assembly is that it appears that the barrel is mated inside the barrel extension that interfaces with the receiver. The small pin sticking out at the back of the barrel extension is the ejector for the shotgun. As you pull the action back, the edge of the shell will hit this pin and flip the shell out of the ejection port. Magazine Tube The magazine tube is a thin walled steel tube that appears to be a single piece tube which is necked down in the area above the threads for the magazine cap.
At the front of the tube is a small lip that bears up against the
magazine spring retainer. Magazine Cap The magazine cap is manufactured from some type of aluminum alloy. Forend The forend is manufactured from some type of synthetic material and includes a lower Picatinny rail for mounting accessories. Action Bar The dual action bars and bolt carrier are all machined form a single piece of steel alloy. Bolt Assembly The breech bolt assembly is manufactured from some type of steel alloy. Receiver The receiver is manufactured from some type of aluminum alloy and is machined to a nice smooth finish. It comes drilled and tapped and is ready for the upper rail installation. The stock interface at the rear of the receiver does not match the Remington 870 or Mossberg 500, so the chances of finding an aftermarket stock would be slim for this shotgun. Receiver Mounted Rail The receiver rail is manufactured from some type of aluminum alloy and measures 5.9" in length. The top of the rail contains a trough to use for aiming if needed when not using the rear sight and the bottom is contoured to match up with the top of the receiver. The rail is attached with four screws shown below. Notice the right (front) two screws are shorter than the left (rear) screws. If they are swapped during assembly, you will have problems with the barrel extension fitting into the receiver. Rear Sight The rear sight attaches to the rail by tightening a thumb nut on the left side of the sight. The rear sight is adjustable for both elevation and windage. I was not impressed with the overall finish of the rear sight. The black shinny surface kept flaking off to reveal the dull black surface. In the photos below, much of that black shiny material has flaked off and the sight actually looks better. Spacer The synthetic spacer that is between the return spring and the receiver appears to have been hand worked on the top. If you were to remove the return spring, I believe you should not remove this spacer because the the outside edge of the spacer serves as a guide to prevent the forend from touching the receiver when cycling the action. Return Spring The return spring measures ~6" in length. Trigger Plate Assembly Like most trigger plate assemblies, I would not recommend further disassembly unless you are experienced with these types of mechanisms. The trigger guard is some type of synthetic material (my bet would be glass filled nylon). The trigger guard housing is held in place by the single retainer pin and by a rounded tab that nests in the back of the receiver. Trigger Plate Pin Stock The stock is some type of synthetic material with a rubber molded pistol grip.
Figure 73 - Stock Bolt Washers Recoil Pad The recoil pad is sculpted to add some comfort and measures about .84" thick. The high density/stiffness of this pad makes it's recoil absorbing capability relatively low.
Thoughts With the exception of the rear sight and the drip on the barrel, the overall finish of the shotgun was good. You can view the other parts of this review by using the links below or feel free to add a comment on the "Reader's Comments" page.
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