Samson OFS Rail 2.2 and OFS Rail 1.5, Samson OFS Rails Samson OFS Rail 1.5, 04-06016-01

2 and OFS rail 1.5 fit on a picatinny rail and has two different lengths to choose from and will work on any rifle with a picatinny rail. The 1.5 length will fit on a sniper Rifle Scope that has a longer eye relief and the 2.