With lock = XR & L, locks discontinued in 2012 Large alloy (OM #XR3-RED size) w/o lock: Early = NXR3-RED, Late = XRN-3RED. Large steel (OM #XR3-RED size): Early = A (in a square) XR-3 (that's XR dash 3), Late = A & T in separate 1/8” circles New Vaq w/o lock has a 512 prefix serial #, locks discontinued in 2012 Small steel (OM #XR3 size) 1/8” closer to trigger guard than XR3-RED size, (cut for indexing pawl system, no extensions into main frame & only 7/16” thick) = A (in a square), no other marking observed w & w/o lock. Most all grip frames are 1/2" thick unless otherwise noted below.įor convenience, NM frames in the two most common sizes are often referred to by their old model #s as XR3 'SIZE' or XR3-RED 'SIZE' but they have their own Casting numbers. Below is my complete list excluding Bisley and Birdshead which are all steel and all the same size regardless of usage:Īll GRIP FRAME MATERIAL & IDENTIFICATION NUMBERS (Founder’s Marks) CAST ON GRIP FRAMES (N/A to Bearcat)
The site above is a good one but several years out of date now.
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