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GUNSMITHING SERVICES: Tier 1, Tier 2 M700 Receiver Blueprinting



Additional Services

Pin Recoil Lug
Bolt Handle Skeletonizing
Bushing Striker Pin Hole
Clip Slotting For M40 Style Optic Base
LRI Side Bolt Release
AIAW Magazine Well Modification
AR-15 Extractor


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: Tier 1, Tier 2 M700 Receiver Blueprinting

  • $ 27500
  • Save $ 25


Blueprinting, or truing, is the process of improving the accuracy potential of a factory bolt action. LRI has pioneered the use of Vertical Machining Centers to blueprint bolt action receivers. From a very humble beginning, we've refined the process with the use of with our Sunnen Precision honing station and with 5-axis CNC machining capability. In fact, our processes are so much more accurate and reliable than traditional gunsmithing practices you will often hear us refer to what we do as accurizing instead of blueprinting.

This is not art. It's deployment of modern manufacturing resource.

Challenges solved with our process:

Honing:

  • Single stroke diamond honed to deliver a straight/round ID bore
  • Honing delivers a superior internal bore surface finish
  • Honing sizes the bore for proper clearance/function
  • Honing creates a qualified reference feature for later machining ops

5 Axis CNC receiver blueprinting:

  • Reduction in tool library eliminates tolerance stacking
  • Consolidated machining operations improves dimensioning accuracy
  • Exceptional Parallelism between bolt and receiver lug surfaces
  • Use of a "Higbee" lead thread to eliminate the risk of a torn or galled thread start
  • Avoidance of part distortion from work holding
  • Taper free receiver ring threads with use of thread milling tool paths
  • Standardization of threads via qualified gauging
  • Misaligned optic base holes eliminated 
  • Superior surface finish from solid work holding and aerospace quality machining and tooling

Bolt blueprinting:

  • Intuitive electronic probing of all surfaces
  • Repeatable dimensioning for reduction in barrel work setup
  • Single setup for exceptional dimensional control
  • Setup "averaged" over entire bolt body for parallelism/concentricity
  • Exceptionally good surface finishes
  • Consolidated tool package reduces tolerance stacking

The end result are features and a level of precision that were once the exclusive domain of custom actions.

 

 Tier 1 Blueprinting Standardized Features:

  • Single Stroke Diamond Honed ID receiver bore
  • Higbee Lead thread feature 
  • Helically milled thread ring 1.085"x16 tpi
  • Thread milled receiver ring threads
  • reconditioned lug abutments
  • Bolt face resurfacing
  • Bolt Lugs resurfaced
  • Primary extraction feature tuned
  • TIG welded/silver soldered bolt handle

 Tier 2 Blueprinting Standardized Features:

  (Retains OEM threads, use for Savage type barrel nuts for "Remage"            setups)

  • Single Stroke Diamond Honed ID receiver bore
  • reconditioned lug abutments
  • Bolt face resurfacing
  • Bolt Lugs resurfaced

Optional Features and Services:  (Both Tier 1&2)

  • Striker pin Bushing installation
  • Time and TIG bolt handle (included with Tier 1 package)
  • Turn Striker Pin to .0625"
  • AR-15 Extractor installation
  • Clip Slotting receiver for M40 style lugged optic base
  • LRI External side bolt release installation
  • Pinned Recoil lug (limited to LRI lugs only)
  • Wide variety of bolt fluting options
  • Jeweled bolt body
  • 8-40 optic base hole enlargement
  • Fluted Bolt shrouds
  • Skeletonized bolt handle
  • Extended internal magazine modification
  • AIAW magazine modification to receiver
  • Filling tang groove on M700 SS actions via TIG welded silicon bronze
  • Tactical bolt knob installation
  • Single and multi colored Cerakote application
  • Parkerize coating application (limited to carbon steel actions only)
  • Glass bead blast finish (limited to stainless actions only)
  • Installation of aftermarket bolt handle
  • Fitting aftermarket bolt to receiver
  • Reconditioning factory recoil lug (ID bored and surface grinding both sides) 

Proven Performance:

In the spring of 2013 LRI announced a very ambitious project to one of the toughest and most demanding precision rifle audiences in today's shooting community:  SnipersHide.com  

We began offering accurized M700 barreled actions through an internet special.  Since that time LRI's "Sniper's Hide M700 Accurized Barreled Action Group Buy" has grown into the largest and most continuous internet special in the history of the Sniper's Hide website.  

LRI has literally produced thousands of custom built barreled actions for precision shooting enthusiasts. Our services have gone international with clients working in Private Security, Risk Management and Law Enforcement.  The success of our effort validates the process and has ushered a new chapter in how precision bolt action barreled actions are assembled.  Additionally, we have over 60 domestic/international dealers that retain our services for machine work.

You are in good hands.

  

 

IMPORTANT:

Finish Limitations with bolts and receivers.

The work LRI performs when blueprinting an action is invasive and extensive.  TIG welding/soldering involves the careful use of intensive heat.  Coatings applied to the bolt must be removed to avoid contamination of the welded/soldered joint.  

Because of this your bolt will require refinishing.  This cannot be avoided.  LRI offers a full menu of finishing options to restore your bolt to pristine condition.

Dimensional limitations with receivers and bolts.

It is very common for LRI to rework an action that has been previously blueprinted by another shop.  We are very comfortable with this in almost all circumstances, but there are limitations.   

Our blueprinting process allows us to preserve the OEM dimension of 1.150" measured from the receiver ring face to the top of the lug abutments on M700 actions.  With "unmolested" receivers this is no problem.  Receivers that have had previous work may or may not allow for this.  It is literally a case by case basis as it all depends on how much material was previously removed.

 

A fundamental of any machining operation is rigid and solid work holding, (clamping the part to the machine in a manner that prevents it from unintended movement)  

LRI treats your property with great respect, however there are limitations.  We cannot guarantee that our fixtures will not damage the surface finish of your receiver.  We are as careful as we can be, but collets and vices are made from tool grade, heat treated steels.  They are hard and very tough to ensure a repeatable register for thousands of cycles.  

Because of this your receiver may require refinishing.  This cannot be avoided. LRI offers a full menu of finishing options that will restore your receiver to pristine condition.

Recoil lugs.

Our blueprinting service alters the factory M700 thread dimensions.  They are enlarged to a value of 1.085"x16tpi.   A factory/aftermarket recoil lug cannot be reinstalled without modification.  We must ID bore the hole through the lug for the larger barrel tennon to fit through.   This must be done when clients choose to use OEM or outsourced components.  LRI also surface grinds all factory M700 lugs to bring the two sides to perfect parallelism.  LRI recoil lugs are made this way from the start for a "drop in" installation.

LRI limits the recoil lug pinning option to LRI brand lugs only.  Our recoil lugs come standard with pin bores drilled/reamed during manufacturing.  The market is saturated with a variety of aftermarket recoil lugs.  Attempting to fixture and archive tool paths for every recoil lug variation in circulation just isn't realistic.

 

All LRI lugs are finished to a nominal thickness of .300"-.3125"  We offer two profiles.  A "Heavy" Tactical lug in a modified tombstone profile and a "Heavy" Tactical designed to emulate the factory M700 profile.

 

When selecting your option, choose the M700 profile for "drop in" pre inletted stocks or chassis configurations.  Our standard Heavy Tactical is best suited for gunsmiths comfortable with modifying the recoil lug inlet pattern.

 

 

 


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