We have the best Warranty and after sales support in the industry.

UDMC rifles are known for the accuracy, reliability, and durability of their weapons. Our barrels make the difference. 

Patented PVAR technology (present the copy of patent). It is known to reduce field maintenance, reduce the rate of fire, provide optimum flexibility and improved accuracy through a floating barrel design, reduced wear and tear, extended rifle's lifespan, easier to take down and assemble, and increased reliability under adverse battle conditions.

We sell two types of rifles: the M4 type (5.56 NATO / 9mm) assault rifle and M110 type (7.62 NATO) precision rifles. Semi and Full-Automatic selector for Military and LEA are designated as the “F” series. Semi-Automatic selector only for commercial sales is designated as the “S” series.

Because unlike other manufacturers who use investment castings for their frames and slides, we use only forgings as raw materials and then heat-treated. Our barrels are machined from round bars in Stainless Steel 410 ordnance grade, supplied to us in blanks by Dikar- Bergara from Spain, and duly certified if the customer will request for certification. Our 2011 pistol comes with NITRO-CARBURIZED (QPQ) stainless steel slides and frames, a process that hardens the “case” of the slide and frame and makes it so smooth that no lubrication is required.

For the caliber 5.56mm NATO, 600 meters for the 14.5 inches barrel. For the caliber 7.62mm NATO, 1000 meters for the 22 inches barrel. 

For the caliber .45, MER is 150 meters for the 5 inches barrel. 

Maximum Effective Range (MER) 
*To borrow a definition, MER is “The maximum range within which a weapon is EFFECTIVE against its intended target”. This would translate into the maximum range that the weapon could effectively put a man out of action. 

The term "Mid-Length Barrel" is actually a misnomer because the barrel length is actually the same. What it simply means is that the barrel uses a "mid-length gas tube" of 11.25 inches long. Typically, the standard carbine has a gas tube length of 9.75 inches. This gas tube length of 9.75 inches is the one used for barrels 10.5-inch, 11.5-inch, 14.5-inch up to 16-inches. 

The relatively new concept of mid-length gas tube (11.25 inches) was designed for and usually installed on a 16-inch barrel, can also be adopted on a 14.5-inch barrel. A 16-inch barrel using a mid-length gas tube means that the placement of the drilled gas port in the barrel will be at 7 inches measured from the tip of the muzzle of the rifle instead of the standard specification of 8.5 inches from the muzzle tip. For the 14.5-inch barrel, it will be anywhere from 5.5 to 6.0 inches from the muzzle tip, depending on your choice. The effect is that there will be a little bit less gas pressure being rammed back into the Bolt Carrier Group. The use of a mid-length gas tube on a 16-inch or 14.5 inch barrel will render a slightly “softer” shooting, less recoil and less muzzle rise AR rifle.

Since UDMC produces its own barrels from cylindrical blanks, we are now able to introduce this new F5-DGIS and S5-DGIS Mid-Length model on 14.5 and 16-inch barrels. Actually, we can drill the gas port in wherever part of the length of the barrel, something that AR assemblers cannot accomplish for you unless they “weld” the originally-drilled gas port which will eventually give way in no time at all. 

The only drawback if you order from us this Mid-Length Barreled S5-DGIS is that it will be more expensive. Why? It is because we will have to install a longer handguard since we will not be able to use the standard M4-length handguard. The handguard that we will install will be a T6 aluminum “KeyMod railguard” that will float the barrel, a feature that a competitive shooter wants as it aids in better accuracy. As another option, the KeyMod railguard can cover or not cover the gas block front sights. If you want the gas block inside the railguard, we will install a “low-profile” gas block that will fit inside the railguard. That will also mean a longer railguard to cover the gas block.

There are at least seven (7) parts that are different in a semi-automatic and fully automatic M16 or M4. These are the lower receiver (frame), hammer, trigger, disconnector, sear, firing mode selector and bolt carrier group. 

YES. The equivalent of the M4 or the M16 in our product lines are the F5 and S5 series in Direct Gas Impingement Systems. Our equivalent models are the F5- DGIS (full auto) or S5-DGIS (semi-auto). These models are also offered in PVAR gas-piston system. 

YES. What we produce is the M110 derivative in caliber 7.62 NATO (7.62 x 51mm) which has the flexibility to use the .308 WIN and the 7.62 NATO ammunitions. This is designated as S7 in our list of products. They come in direct impingement model.

Please go to our website and click on the topic “Technology”. The differences and advantages are explained there in greater detail.

For the caliber 5.56 NATO, it can use any brand of M193 or M855 ammo. For the caliber 7.62 NATO, it can use any brand of M80, M118 and M118LR ammo.

Not yet, but we are planning to sell ammunition in the near future.

(Present the copy of test and evaluation report from PNP Directorate for Research and Development (DRD)

For the actual result of the accuracy of UDMC rifles, a test and evaluation were conducted by the Philippine Army and Philippine National Police (PNP) for 2 units of UDMC rifles. It was conducted by two separate government agencies to make sure that there is no manipulation of results.

Effective range for the caliber 5.56 NATO is 600 meters for a 14.5 inches barrel. For the caliber 7.62 NATO, 1000 meters for 22.5 inches barrel although it was tested way beyond those distances and found to be still accurate. For example, the S7 was hitting 14 inches by 14 inches targets at 1,000 meters!

Effective range for the caliber .45 is 150 meters for 5 inches barrel.

Effective Range (ER) 
*To borrow a definition, ER is “The range within which a weapon is EFFECTIVE against its intended target”. This would translate into the maximum range that the weapon could effectively put a man out of action. But more often, our rifles go beyond these distances and are still accurate and effective.

The Bergara cylindrical blanks are made from the finest carbon steel and AISI-410 premium-grade stainless steel, used in the ordnance, aerospace and defense industries. 

If other suppliers claim that their barrels are AISI-410, only a Certificate of Chemical and Mechanical Analyses can determine its quality. UDMC’s AISI-410 and AISI-416 Stainless Steel ordnance grade barrel has contents of Nickel, Molybdenum and traces of Vanadium which are not found on a standard AISI-410 and AISI-416 stainless steel barrel. The net effect is that the United Defense-Bergara barrels have a yield strength of 780 MPa (versus 275 MPa of std AISI-410 and AISI-416) and a tensile strength of 920 MPa (versus 517 MPa of std AISI-410 and AISI-416). In terms of toughness, UDMC barrel is 73 Joules versus 34 Joules of the std AISI-410. 

If required by the customer, we can issue a certification that the barrel installed on his or her UDMC rifle is a United Defense-Bergara PREMIUM Grade Ordnance barrel.

The optimum combination of high hardness, yield strength, and tensile strength, along with the correct toughness, allow UDMC barrels to withstand the generated pressures when the rifle is in battery, even with powerful rounds such as the .30 caliber or the .50 caliber precision rifles. 

UDMC-BERGARA barrels, compared with other stainless steel barrels in the firearms industry, are very hard steel which increases the mechanical properties of the barrels and it is fair to say that this is one of the best insurance from the safety point of view of a barrel. In addition to this, one of the differences of UDMC-BERGARA barrels is the small grain size of its molecular structure thus guaranteeing excellent toughness. The homogenous microstructure during hardening and tempering provides a uniform hardness along the bar, producing a very uniform rifled bore, which is the key to accuracy of a barrel. The heat treatment, in combination with the precise deep hole drilling, honing and button rifling process results in a uniform finish of the bore under 0.0008 inches. The stress relieving heat treatment on the other hand, after the button rifling process, protects the bore from inside deformation after the tapering of the barrel. It also helps protect the barrel from heat generated after continuously firing several hundreds of rounds.

The same level of quality speaks of the UDMC-Bergara carbon steel barrels in durability, safety and accuracy.

Finally, the high chromium content of UDMC-Bergara barrels provides a good corrosion resistance to it.

For both rifles and pistols, we use only Stainless Steel AISI 410 or 4150 carbon steel in Premium ordnance grade and duly certified from source or origin of the blanks as raw materials. 

YES we do. We manufacture them from barrel blanks supplied to us by Dikar- Bergara from Spain. We are the Exclusive Distributor of Dikar Bergara for all their products and barrel raw materials (blanks) including their bolt action rifles in the entire Asia-Pacific. 

Minimum of 20,000 rounds under normal use.

Minimum of 20,000 rounds under normal use.

Lengths are in 8.5, 10.5, 11.5, 14.5, 16, 18, 20 and 22 inches for both F5 and S5 series (5.56 NATO). On the other hand, lengths are 14.5, 16, 18, 20 and 22.5 inches for the S7 series (7.62 NATO). The price of the whole rifle goes up as the barrel length goes longer. For S9 DBB (9mm), lengths are 6.5”, 10.5”, 11.5”, 14.5”, and 16”.

We use T6-7075 for the upper and lower receivers, T6-6061 for the handguard (or thermoplastic) and buttstock tube. For metal parts, we use only 4140, 4150 and MIM-S7 for the small parts. 

We use 4140 in barstock for our slides and frames and MIM for the small parts. Our barrels are made of stainless steel SS-416 or SS-410 Premium ordnance grade.