Self-lubricating, Delrin® 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.
SPECS: Delrin. OBS10 - Approx. 2½" (6.4cm) long, 7⁄8" (2.2cm) wide, 3" (7.6cm) high. OBS20 - Approx. 2½" long, 7⁄8" wide, 5" (12.7cm) high. Fits AR-15/M16, .223 cal.
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