The SIG Sauer SSG 3000 sniper rifle features an Anschütz type UIT rail on the underside of its handguard. The rifle pictured is also fitted with a Zeiss Victory Diavari 3-12x56 telescopic sight with Zeiss rail.The SIG Sauer 200 STR target rifle also features an Anschütz type UIT rail on the underside of its handguard.
A similar design is called Freeland rail, but the dimensions of Anschütz (UIT) and Freeland rails differ.[2] The Anschütz rail is wide and shallow,[3] and the Freeland is narrower and deeper. Accessories made for one of the two types are not necessarily compatible with the other.
Dimensions
Dimensions below are approximate.
Description
Anschütz (metric)
Anschütz (imperial)
Freeland (metric)
Freeland (imperial)
A
Internal width of opening
10 mm
0.400 in
8.4 mm
0.330 in
B
Internal width bottom
13 mm
0.512 in
11.4 mm
0.450 in
C
Total internal height
4 mm
0.160 in
D
Internal track height
2 mm
0.079 in
E
External height
7.4 mm
0.290 in
10.2 mm
0.400 in
F
External width
22 mm
0.870 in
16.3 mm
0.640 in
Drawing comparing Anschütz (left) and Freeland equipment rails (right).
Sling swivel, older standard used for mounting slings, particularly on hunting firearms
Picatinny rail (MIL-STD-1913), improved and standardized version of the Weaver mount. Used for both for scope mounts, and for accessories (such as extra sling mounts, vertical grips, bipods etc.) Major popularity in the civilian market.
