Lower Receiver Blocks high strength polymer construction! AR-15 Lower Receiver Block Weight: 12 oz AR-15 Height: 6.5" Length: 5.0" Width: 1.25" AR .308 Lower Receiver Block Weight: 12.2 oz AR .308 Height: 6.5" Length: 5.0" Width: 1.25" Allows for gas block roll pin installation Mounting holes for attachment to bench or alternative work surface 4 points of contact for vice use Trigger guard installation section Allows lower to be held for multiple aspects of assembly Fire control pin assembly Able to hold complete firearm for maintenance Small parts tray 100% Made in USA Mfg: Midwest Industries, Inc.
