Smith & Wesson M&P AR-15 Complete Upper Receiver Parts Kit - $17.79 Building your own AR-15? Do it the easy way with this Smith & Wesson M&P AR-15 Complete Upper Parts Kit! Parts Kit includes everything you need to finish your stripped upper receiver. NOTE: Upper Receiver not included. 7 total parts

Smith and Wesson M&P AR-15 Oops Kit Replacement Part Kit - $5.95 If you work on your weapons we all have had those, "Where did that little part go?" moments. Now be ready for the next one with Smith & Wesson M&P AR Oops part kit, all those little parts you can spend all that time searching for them