Ar-15 1rd Bob Sled 223/5.56 - Ar-15 Bob Sled 223/5.56 1rd DerlinA(R) Black Short

Self-lubricating, Delrin(R) loading block replaces the magazine and follower for smooth, single round loading. Bolt holds open after every shot. CNC-machined loading tray ensures proper cartridge alignment and reliable feeding. OBS10 provides a short, match-length loading block. OBS20 is the same size and shape as a 20-round AR-15 magazine; approved for Service Rifle competitions. Mfg: Bob Hahin SPECS: Delrin. OBS10 - Approx. 2A 1/2'''' (6.4cm) long, 7/8'''' (2.2cm) wide, 3'''' (7.6cm) high. OBS20 - Approx. 2A 1/2'''' long, 7/8'''' wide, 5'''' (12.7cm) high. Fits AR-15/M16, .223 cal.