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NOTE: Gunsmithing Services are invasive and will most often (directly with tooling or indirectly with work holding) damage existing surface finishes on parts such as receivers. LRI offers a full menu of finish options for your components, please ensure you have also added an appropriate finish option to your cart if applicable.

Finish Options

Cerakote (most popular)
Parkerize Carbon Steel Action
Parkerize Carbon Steel Bolt
Glass Bead Stainless

GUNSMITHING SERVICES: Dual ejectors for M700's with AR15/M16 Extractors

  • $ 9000

Problem Statement:

Ejection with a factory bolt M700 fitted with an AR15/M16 extractor has always been plagued with potential problems.  The issue is the ejection angle of the case body as it leaves the port. 

The factory ejector's clock position combined with the altered position of the claw causes the case to exit with a high trajectory that approaches 1 o'clock. (RH shooter's perspective behind the rifle) When combined with modern optics using external "tree stump" windage turrets, it creates a very frustrating problem where the case hits the scope and back flips right back into the loading port.

Some aftermarket bolts solve this by moving the ejector position to 9 o'clock.  This restores the case to a near horizontal ejection angle.  Unfortunately this isn't really a viable option to try and alter on a factory bolt. LRI can often install dual ejectors on aftermarket M700-clone bolts that have not relocated the ejector position.



What we've done is add an additional ejector.  We mirror it to the top side of the bolt face.  Doing so restores the ejection angle so that cases will again clear the turrets.   One small issue that must be dealt with now is the increased shell pressure from the additional ejector spring.  Trimming a few coils from the spring solves this.  The net result is a reliably extracting gun that will "punt" the case low enough to clear the optics.   Trimming the spring length also reduces the "blast radius" of spent cases.  -Helpful for "gamer gun" events where limited time is allocated for brass recovery.

Photo shown with M16 extractor bushing also installed to the nose of the bolt face.

LRI has application specific workholding and dedicated equipment for this service.  When combined with our commitment to exploiting modern machining potential, it results in predictable outcomes with very fast delivery schedules.  Hours and days rather than weeks and months, are what we strive for.

This listing is for a service and the installation of new small parts.  You must send us your bolt in order for it to be completed.

Note* This service IS for BOTH RH and LH bolts.

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