Proper forward bolt location: Ensures proper case supportĬast vs forged vs billet: What’s the difference? Allows proper bolt/receiver locking lug contact without binding. Critical to proper scope mount capture & durability.ġ1. Proper sharpness, depth & well defined scope side mounting threads. Critical to bolt stop function and durability.ġ0. Proper bolt stop window height & width, and, proper location of pin holes in bolt stop bosses. Prevents spring guide binding & poor magazine capture.ĩ. Proper op rod Spring guide slot depth & location. Critical for durability of rear sight function.Ĩ. Proper height, depth & interval of rear sight receiver serrations. Proper firing pin seat: Prevents damage to firing pin tail when bolt bottoms at the inside rear of receiver tail. Proper op rod shelf height & width: Ensures op rod is fully supported to prevent op rod “roll out” which causes premature cam deformation. Proper firing pin bridge location: Prevents out-of-battery detonation & jamming of the bolt. Critical to safe operation & durability.Ĥ. Proper right & left locking lug helix: Ensures full “mirror image” contact to bolt lug helixes to prevent collapse of headspace. Critical to safe and durable operation.Ģ. After 25 years of inspecting M14/M1A type receivers we have found, and continue to find, many that are fatally flawed (not fixable), including current as well as defunct companies, and, AT ALL PRICE POINTS.ġ. While M14/M1A receivers may all look pretty much the same, they are NOT. The M14/M1A (& M1 Garand) receiver has the most complex geometries ever designed in an issue US martial arm making it the most difficult receiver ever manufactured. FAILURE TO DO SO MAY RESULT IN FIREARM DAMAGE, PERSONAL INJURY, OR DEATH* *BARRELS, BOLTS, & RECEIVERS MUST BE PROPERLY HEAD SPACED PRIOR TO USE.

Fed ord m14 for sale