The BA-AKNT adapter allows for easy installation of buffer tubes and receiver extensions on AK47/74 pistols. The ideal solution for SBA3 /SBA4 equipped AK s, the BA-AKNT accepts flat and sloped AK receivers. Product Features AK to AR brace adapter without tube Fits AK47/74 pistols Steel forks and 7075 aluminum housing Adapter machined to accept flat and sloped AK receivers Simple and secure installation (castle nut recommended) Product Specifications Weight: 4 oz Dimensions: 3.5 x 1.75 x 1.75