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Introducing a low-profile adapter that can enhance an AR-15/M16 rifle with an A2-style buttstock, and provide a single-point clip-on sling/mash-hook/H&K sling mounting attachment for easy versatility. This adapter is precision machined from 4140 carbon steel, ensuring extra strength with additional metal on the attachment loop. No matter how hard the sling is pulled or twisted, this adapter will not break. The Right Hand (RH) model has the loop on the left side to accommodate right-handed shooters and the Left Hand (LH) model has the loop on the right for left-handed shooters. The installation of this adapter is simple and doesn't require any permanent alterations to the rifle. To use it, remove the buttstock, slide the adapter over the receiver extension tube, and reinstall the stock using the included spacer and extended buttplate screw.