Complete Uppers 5.56 8.1″ M-LOK$675.00ST Billet Compressor Upper$1,999.00 – $2,299.009mm 5.5″$859.009mm 8.7″$759.00 – $939.009mm 16″$799.00 – $884.005.56 M4 Carbine 16″$580.00 – $868.00Carbine CHF 11.5″$670.00 – $958.009mm Recluse Upper$1,765.005.56 Midlength CHF 16″$680.00 – $978.005.56 Midlength CHF 14.5″$835.00 – $1,123.005.56 Midlength Lightweight 14.5″$745.00 – $1,048.005.56 LE Midlength 16″$590.00 – $878.00300 Black Out 16″$750.00 – $1,038.00300 Black Out 10″$949.00 – $1,223.00300 Black Out 8.3″$948.00