Mossberg 4x4 (Weaver)

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Weaver & Picatinny Rings

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The History of Mossberg

In 1919, Swedish immigrant Oscar Frederick Mossberg, aged 53, launched a journey into firearms manufacture. Alongside his sons Harold and Iver, the trio established what was originally named Mossberg & Sons, Inc., operating out of a rented loft on State Street in New Haven, Connecticut.

The company’s vision was relatively simple: to manufacture durable and reliable firearms for the working class. Their first creation was a modest 4-shot Brownie pistol in .22 caliber, paving the way for a legacy of accessible, dependable firearms.

Just a few years later, in 1922, the Mossbergs produced their first rifle, the Model K. This .22 hammerless pump repeater rifle was in fact initially designed by the famous Arthur Savage but was finalized and improved by the Mossberg team.

As the world descended into war during the 1940s, Mossberg & Sons pivoted its focus to support the war effort. Securing a government license, they began producing tolerance tooling gauges, various machine gun parts, and components of the British Lee-Enfield rifle. During this era, Mossberg also introduced the Model 42MB, a .22 training rifle for British troops. An impressive amount of 45,000 units of Mossberg Model 42MB were produced. This period not only propelled Mossberg onto the global stage but also sparked a period of significant growth for the company.

The post-war years saw Mossberg contributing to the sporadic popularity of bolt-action shotguns, as they produced an array of these firearms. However, today, the company is most renowned for its exceptional pump-action shotguns. Particularly famous is the legendary Mossberg Model 500 pump-action shotgun introduced in 1962. In 1979, the US government awarded Mossberg a contract to produce the Model 500 as a combat-duty-rated pump shotgun. This led to the Model 500 being adopted by every branch of the US Military. By 2010, 41 different variations of the Model 500 were available on the market.

The company’s influence extends beyond firearm manufacturing. Mossberg has introduced several components now commonplace in the industry. For instance, Alan Mossberg developed a safety cable lock in 1989 that now comes as standard with almost every firearm sold today.

Mossberg celebrated 100 years in 2019, and even today continues to be a family-owned and operated business.

Mossberg 4x4 Rifle Review

All variants of the Mossberg 4x4 rifle are drilled and tapped for scope mounts, but most of them had factory-installed Weaver bases.

This page is dedicated to Mossberg 4x4 models with Weaver bases. You can also see:

Scope Mounts for Mossberg 4x4

Mossberg 4x4 in .30-06

Figure 1: Mossberg 4x4 in .30-06 (Source: https://www.huntinggearguy.com/rifle-reviews/mossberg-4x4-review/)

Mossberg 4x4 is a bolt-action hunting rifle. It is sort of an upgrade from the budget-friendly Mossberg 100 ATR. While the 100 ATR offers all-around performance on a budget, the 4x4 is a little more advanced. It can easily be considered a mid-range rifle, offering a bit more than the 100 ATR for those willing to spend a little extra. Both 100 ATR and 4x4 are now retired, but they live on through the even more efficient Mossberg Patriot.

The Mossberg 4x4 rifle features a button-rifled barrel that is free-floating. Depending on the variant, the length of the barrel can be either 559 mm or 610 mm (22 and 24 inches respectively).

When 4x4 was introduced, Mossberg was already manufacturing its rifles with their now well-known and very reliable LBA trigger system. This is why most Mossberg 4x4 models came with the LBA trigger, which stands for "Lightning Bolt Action Trigger". It shares some similarities with the AccuTrigger you might know from Savage rifles. One of the best things about this LBA trigger is that you can adjust it yourself. Using a screwdriver, you can set the trigger pull weight anywhere between 0.9 to 3.2 kg (2 and 7 lbs). It has a special safety feature built into it, known as a safety blade. A lightning bolt shape is cut into this blade - hence the "Lightning Bolt Action" name. This blade needs to be fully depressed before the gun can fire. It's a simple feature that does a big job - it keeps the gun from accidental misfiring.

The rifle offered a few different stock options. You can go with a modern polymer, striking gray laminate, or traditional, appealing American walnut. All these options come with a Monte Carlo-style cheekpiece for comfortable shooting. They also have slim grips, barrel vents on the forend, and a soft butt pad to help ease the recoil.

The action is of the push-feed style, and to our knowledge, the 4x4 rifle is available in only one action length, even though it was produced for short-action and long-action calibers. The receiver is drilled and tapped, but it usually has a 2-piece Weaver base pre-installed. A 2-lugged bolt is hosted inside the action, and it cycles smoothly, just like you would expect from a mid-range rifle.

As for safety, the Mossberg 4x4 rifle is equipped with a side lever two-position safety mechanism, which was simple and intuitive to use. Pushing the lever forward signaled the rifle was ready to fire while pulling it back sets it to safe. When in firing mode, a red dot was visible as a clear visual indicator.

The magazine is detachable, and it can hold 4 to 5 bullets, depending on the caliber. It's easy to take out and put back in, thanks to a handy catch that's simple to reach in front of the magazine well.

Mossberg 4x4 Calibers

Mossberg 4x4 can be chambered for:

.22-250 Rem.
.243 Win.
.25-06 Rem.
.270 Win.
7mm-08 Rem.
7mm Rem. Mag.
.308 Win.
30-06 Spring.
.300 Win. Mag.
.338 Win. Mag.

Mossberg 4x4 Variants

These are the Mossberg 4x4 variants:

Mossberg 4x4 Laminate
Mossberg 4x4 Synthetic
Mossberg 4x4 Walnut

To our knowledge, every Mossberg 4x4 rifle was purchased with factory-installed Weaver bases.

The drilled and tapped receiver of the Mossberg 4x4 with factory-installed Weaver bases

Figure 2: The drilled and tapped receiver of the Mossberg 4x4 with factory-installed Weaver bases (Source: https://www.gunsinternational.com/guns-for-sale-online/rifles/mossberg-rifles/mossberg-4x4-in-7mm-rem-mag.cfm?gun_id=100478730)

Scope Mounts Interchangeable with Mossberg 4x4 (Weaver)

Rifles That Have One-Piece Scope Mounts Interchangeable with Mossberg 4x4 (Weaver)

The necessary condition for rifles to have one-piece scope mounts interchangeable is that the mounting surfaces of these rifles match in every dimension. This means that any rifle with Weaver bases will have one-piece scope mounts interchangeable with Mossberg 4x4 which has the same scope mounting solution.

Rifles That Have Two-Piece Scope Mounts Interchangeable with Mossberg 4x4 (Weaver)

The situation with two-piece scope mounts is the same as with the one-piece scope mounts when it comes to rifles that are equipped with Weaver bases.

Any rifle with Weaver bases will have two-piece scope mounts interchangeable with the Mossberg 4x4 which has the same mounting solution.

Best Scope Mounts for Mossberg 4x4 (Weaver)

Fixed Scope Mounts for Mossberg 4x4 (Weaver)

Henneberger is a German company known for the quality and reliability of its products. If you are looking for a fixed scope mount to mount on a weaver base on your Mossberg 4x4 (Weaver), then we recommend these Henneberger’s 30 mm Weaver rings. They are made of aluminum and come with a 30-year warranty.

Detachable Repeatable Scope Mounts for Mossberg 4x4 (Weaver)

When it comes to flexibility, detachable repeatable scope mounts are the way to go. Being able to easily attach and detach an optic without any tools and retaining zero at the same time can be a great advantage.

If this is what you’re looking for, you might want to consider this INNOmount Two-Piece Mount for Weaver/Picatinny of German quality for your Mossberg 4x4 with Weaver bases.

Help Us Build Our Riflescope Mounts Database

If you happen to own this or any other rifle, we would appreciate it if you could help us expand our database by sending us some photos of the rifle receiver (the bare mounting surface of the rifle without the mounts installed). For your help, our company offers a fair return in terms of practical rewards.

Please send us an email for more information. You can contact us here: info@optics-trade.eu