The Geissele Maritime Bolt Catch is engineered for the warfighter and functions with any lower receiver designed to accept a mil-spec M16/M4 Carbine bolt catch. Increased surface area on the control levers improves ease of operation when locking back the bolt or releasing it after a magazine change. The extended controls provide enhanced functionality for left-handed shooters, who can now manipulate the bolt catch using their left index finger without breaking grip—making magazine changes and bolt lock-back operations faster and more efficient. Aggressive checkering on the lever surfaces creates a textured finish that delivers reliable tactile feedback when operating with gloves or in low-light conditions. Machined from heat-treated 8620 steel and finished with manganese phosphate coating, the Geissele Maritime Bolt Catch serves as an enhanced mil-spec replacement designed to provide overmatch capability on the M16/M4 carbine platform.
AR Bolt Catch/Release, Geissele Lower Parts
Geissele Automatics Maritime Bolt Catch Accessory
$30.00
Geissele Maritime Bolt Catch features increased surface area and extended controls engineered for ambidextrous operation and faster magazine changes without breaking grip. Machined from heat-treated 8620 steel with aggressive checkering, it’s a mil-spec replacement that works with any M16/M4 lower receiver.
Availability: In stock
Geissele Automatics
| Weight | 0.3 lbs |
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| Dimensions | 4 × 2 × 1 in |
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