KWA AEG Parts: LM4 PTR / KR Series Bolt Base O-Ring – Large (191)
£4.50
The KWA AEG Parts: LM4 PTR / KR Series Bolt Base O-Ring – Large (191) is a direct replacement rubber seal for KWA LM4 Series rifles. Fitted around the bolt base, it helps maintain compression, support consistent FPS and keep the cycling of your rifle feeling as it should.
The KWA AEG Parts: LM4 PTR / KR Series Bolt Base O-Ring – Large (191) is a genuine replacement seal for KWA LM4 PTR and KR Series rifles. Designed to fit around the LM4 bolt base, this large O-ring is the part shown as 191 on LM4 diagrams and is intended for players maintaining or repairing their rifle’s internals.
Over time, seals can wear, harden or lose effectiveness through regular use. Replacing this LM4 bolt base O-ring can help bring compression back where it should be, which in turn supports more consistent FPS and smoother cycling during use. For gas blowback rifle owners, that can mean a rifle that feels sharper and more predictable when it matters.
This is a practical service part rather than a cosmetic upgrade, making it ideal for routine maintenance, fault finding or keeping a well-used LM4 running properly. It is a direct replacement component for compatible KWA LM4 platforms, though the bolt base itself is sold separately.
If you are already servicing your rifle, it also makes sense to check other KWA LM4 internal parts and seals at the same time. Order your replacement O-ring today and keep your LM4 performing properly.
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