Genuine Glock OEM steel locking block — the part that locks the barrel into the frame and absorbs slide energy during cycling. The locking block is a core fire-control component and a normal-wear replacement on high-round-count pistols.
Specs & features:
Important compatibility note: locking blocks are model-, generation-, and pin-count-specific. Compact frames (G19/23/32/38) use a different block than sub-compacts (G26/27/33) and full-size frames (G17/22/24/31/34/35). Gen 4/5 frames are 3-pin and use a different block than Gen 3 2-pin frames. Select the correct variant for your frame before ordering, and verify the existing pin count if you are unsure.
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