Works great in polymer frames! - Align Tactical Thumb Rest Canik SFx Rival Locking Block Pin

Looks like the reviewer (Shooter69) submitted his same 1 star review (twice) of him breaking it by “hammering” it in. Obviously didn’t follow instructions as it should easily be hand pressed in only. Likely was trying to force it into a Steel Frame forging of the Rival-S, of which many can be off-spec and is called out on the manufacturer website. Any non-aligned pins will obviously not yield to heavy duty forged steel frames, especially if the recess is way off. Works perfectly in polymer frames. Just need to make sure the internal steel crossbar didn’t move to block the hole. Well made from hardened tool steel. He should have talked to the manufacturer before breaking it by forcing it in and submitting repeat reviews.