The DSR-1 is a modern bullpup sniper rifle. It has distinctive looks with its bullpup layout, spare magazine holder in front of the pistol grip and slotted barrel shroud. Conversion kits for other calibers are available, but not very common.

The DSR-1 is produced in a number of variants:
DSR-1 in .338: The orignal DSR-1 is chambered for the .338 Lapua Magnum round. The .338 model has a longer barrel and the magazine holds 4 instead of 5 rounds.
DSR-1 in .308: Most common DSR-1 model. Chambered for the 7.62x51mm round, feeds from a 5 round detachable box magazine. A suppressor can be fitted instead of the muzzle brake.
DSR-1 in .300: A DSR-1 chambered for the .300 Winchester Magnum round, otherwise similar to the 7.62x51mm model.

The DSR-1 Subsonic is a special version of the DSR-1 with integral silencer. A unique feature is that the silencer is attached to the receiver, not the free floating barrel. Compared to the baseline model it has a much reduced sound signature, even when the baseline model is fitted with a suppressor. The short barrel and full length silencer reduce bullet speed below the speed of sound. The subsonic bullet speed results in a much reduced effective range.

The DSR-50 is an upscaled DSR-1 that serves as an anti-materiel rifle. It is chambered for the much larger 12.7x99mm NATO round, also known as the .50 BMG. The DSR-50 retains the overall design of the DSR-1, but has several features to accomodate the heavier round. The thicker and longer barrel is fitted with a large muzzle brake. This does not only reduce the recoil and muzzle flash, but also reduces the sound signature. Optionally, a suppressor can be fitted instead. A hydraulic buffer is located in the buttstock in order to reduce the felt recoil. The single stack magazines holds three rounds.