Magtech 7022 (Mossberg 702) .22 semi auto rimfire rifle Lockdown maintenance

May 10, 2020 at 1:22 pm

With the UK Government getting ready to ease the Covid-19 Lockdown, I took the Magtech 7022 .22 semi auto out of the gun safe this week for a preseason check. This rugged composite stocked rimfire rifle has served me well since I bought it brand new a dozen or so years ago.

Removing these two cross head screws allows the plastic stock to pull away, exposing two 5 mm pins, that hold the trigger mechanism in place. Pushing these through allows the complete trigger assembly to pull out. Looking inside to the underside of the receiver, the spring loaded bolt, which slides on a guide pin, backed by a nylon buffer can be seen. It is a very simple assembly, which can be pulled out with your fingers, without special tools in the field if necessary. I have done it several times to clean out the carbon blown back, when the spent bullet casings are ejected, but only on my workshop bench. I decided not to attempt it on this occasion, as the bolt and trigger are working perfectly, since my last full strip a year ago.

These images were taken straight from the Mossberg 702 Plinkster Manual, which gives a full, image led description of the strip down and rebuild of the rifle. The Mossberg is a straight copy of the CBC Magtech 7022 and parts are still available.

The bolt can be held back by pushing the cocking lever in, when in the fully open position. This allows gun oil to be sprayed inside for lubrication. Holding the rifle vertical helps the oil to travel back to the spring and trigger sear. To ease the bolt, pulling the cocking lever back releases it again to slide forward into the ready to fire position.

In this position, the rifle is ready to start the firing cycle. With a loaded magazine in place, the cocking lever is pulled back to the most rearward position, cocking the action; the bolt is allowed to spring forward, collecting a bullet from the magazine and pushing it into the barrel. The trigger is pulled and the hammer released to strike the firing pin within the bolt, the pin hitting the rim of the cartridge to ignite the powder, forcing the bullet out of the barrel and blowing the cartridge back, forcing the bolt to overcome the spring pressure, as it does, the cartridge case glances against the slanted ejector plate and exits the now open receiver, the bolt continuing back to recock the rifle. The cycle continues with another bullet being collected as the bolt springs forward again, pulling the trigger firing the rifle, etc, until no bullets are left in the magazine, the red magazine follower now holding the bolt open. The bolt lever should again be pulled back and pushed in to hold the bolt open, before the angled button behind the magazine and ahead of the trigger is pushed forward to release the magazine.

I was informed by one of my readers recently that he bought a pair of Mossberg 702 magazines for his Magtech 7022 and they did not fit properly. When I bought my Magtech, it came with the magazine on the left and later bought two more pattern ones, those on the right. As you can see, the left hand magazine has a larger locating lug in the top left than those on the right. The original is a firmer fit than the other two, but all cycle bullets perfectly. I have seen images of Mossberg magazines and they all have a large lug similar to the original Magtech. Any comments would be welcome regarding these magazines to pass on to other owners. By the way, I did not spill my nail varnish accidentally on the left hand magazine, I used some of my wife’s to mark which one carries the high velocity bullets, the others carrying Winchester 42 grain subsonic rounds.

This shows the other side of the magazines, those on the right being a weaker design with one long slot at the rear, while the original has three slots.

One important bit of maintenance on the magazines, is to slide the bottom plate forward to give access to the inside for cleaning. The spring is an elongated shape to give an even pressure on the follower and I have never removed the spring before, as it could prove difficult to get back in, while attempting to slide the bottom plate across. Partly open, it allows carb cleaner to be blasted up inside to remove any bits of grit, that may have found its way in, stopping the smooth action of the magazine. The magazine should not be oiled for this reason, allowing grit to collect. This view shows high velocity Remington Yellow Jacket bullets, which extend the range on the same scope setting by twenty yards.

Over the years I have done a few improvements to the Magtech 7022. In its brand new state, the trigger was gravelly in feel, which I refined by removing the trigger mechanism and applying valve grinding paste to the sliding parts, spending hours working the trigger, while watching TV, until it felt smooth to operate. A thorough a blast through with carb cleaner, WD40, then Bisley aerosol oil, left me with a consistent pull of the trigger.

Another modification that I did, was to relieve the plastic stock around the barrel, as on hot days the plastic would soften, allowing it to rest against the barrel enough to cause a miss. Having fitted a bipod, this had been magnified, when swinging round to follow a rabbit, the stock would push against the stock. Filing a good clearance around the barrel stopped this from happening. Today a stiff card can be passed between the stock and the barrel.

I found that the rifle butt tended to slide against my hunting jacket, when taking a standing shot, so I glued a strip of soft neoprene to the butt, which cured the problem. Looking at this image, it is about time that I renewed the neoprene.

Due to the light weight of the Magtech, being only about 5 lb with the scope, I found that it often suffered from trigger twitch, when taking a standing snap shot in wooded areas at moving rabbits. Fitting a Jack Pyke tactical sling, when adjusted to the exact length, gave a very firm, steady aim on moving rabbits and spot on shots at static ones that appeared in front of me. This involved drilling the butt and stock to suit the coarse thread of the sling mounts, having measured the sling mount positions from my CZ452 HMR rifle.

Although a very cheap rifle to buy, the Magtech 7022 and the later edition of the Mossberg 702 Plinkster, the Plinkster title not doing it justice, this is an extremely accurate and reliable hunting rifle, which has put hundreds of rabbits on the table.