HRA | Barrel | D6528287 | N/A | January/1953 to December/1956 | 4660001 - 6034729 | Marked "HRA". Receiver Serial #'s 5,600,000 - 5,700,000 may have barrels manufactured by LMC and marked "LMR". |
HRA | Bullet Guide | B8875 | Type 5 | January/1953 to December/1956 | 4660001 - 6034729 | Stamped steel, wide slot. Notch 0.25 inch in radius on upper left side. |
HRA | Clip Ejector | C46018 | N/A | January/1953 to December/1956 | 4660001 - 6100500 | parkerized |
HRA | Clip Latch | C46011 | Springfield 2 | January/1953 to December/1956 | 4660001 - 5793547 | Squared front end, unmarked |
HRA | Clip Latch Pin | N/A | N/A | January/1953 to December/1956 | 4660001 - 6034729 | 3.280 inches long,head is 0.155 inches in diameter and 0.065 inches high. Opposite end slightly rounded. Body of pin is 0.119 inches in diameter. |
HRA | Clip Latch Spring | N/A | N/A | January/1953 to December/1956 | 4660001 - 6034729 | 0.03 inch steel wire, 5 coils, outside diameter 0.26 inch. White finish is original, Parkerized indicates refinishing. |
HRA | Follower and Slide | N/A | Type 2F | January/1953 to December/1956 | 4660001 - 6034729 | Unmarked. |
HRA | Follower Arm | B8869 | Type 4 | January/1953 to December/1956 | 4660001 - 6034729 | No bevel, rounded follower arm pin lugs. Unmarked. |
HRA | Follower Arm Pin | A13667 | Type 3 | January/1953 to December/1956 | 4660001 - 6034729 | No rebate on either end, straight shaft. |
HRA | Follower Rod | C64331 | Type 5 | January/1953 to December/1956 | 4660001 - 6034729 | Stamped sheet metal. Long fork plate riveted. No marking. Grooves/knurls eliminated. |
HRA | Gas Cylinder | D35449 | Type 2C | January/1953 to December/1956 | 4660001 - 6034729 | .575 - .580 inch front sight base, flat top on rear ring, unmarked. May show numbers or letters for machinist's marks. |
HRA | Gas Cylinder Lock | B147426 | Type 3B | January/1953 to December/1956 | 4660001 - 6034729 | Front face not chamfered. Hardened, high hump with round edges.Unmarked. 1.455 inches high. |
HRA | Gas Cylinder Lock Screw(Plug) | B7310079 | Type 3 | January/1953 to December/1956 | 4660001 - 6034729 | Return poppet valve, cross shaped slot. Marked "HRA" or "HRA O". |
HRA | Lower Band | C46000 | Type 3 | January/1953 to December/1956 | 4660001 - 6034729 | Stamped flat profile with no groove or scallops. Unmarked. |
HRA | Lower Band Pin | N/A | Type 2 | January/1953 to December/1956 | 4660001 - 6034729 | Roll pin. |
HRA | Operating Rod | 6535382 HRA | 10 | January/1953 to December/1956 | 4660001 - 6034729 | Straight bolt lug, 5/16 radius cut, flat side, marking on bottom |
HRA | Operating Rod Catch Assembly | C46027 | Type 2 | January/1953 to December/1956 | 4660001 - 6034729 | Unmarked. Right fork 0.10 in wide and Left fork 0.07 in wide, width at accelerator rivet 0.79 in. |
HRA | Operating Rod Spring | SA14675/B147658 | N/A | January/1953 to December/1956 | 4660001 - 6034739 | Round cross section. |
HRA | Receiver | 6528291 | N/A | January/1953 to December/1954 | 4660001 - 5793847 | |
HRA | Receiver | 652891-X | N/A | January/1954 to December/1956 | 4660001 - 5793847 | |
HRA | Receiver | D-628291 | N/A | January/1953 to December/1953 | 4660001 - 5793847 | |
HRA | Receiver | D628291-AA | N/A | January/1954 to December/1956 | 4660001 - 5793846 | |
HRA | Receiver | D628291-E | N/A | January/1955 to December/1956 | 5488247 - 5793847 | |
HRA | Receiver | D628291-J | N/A | January/1954 to December/1954 | 4660001 - 5793847 | |
HRA | Receiver | D628291-L | N/A | January/1954 to December/1954 | 4660001 - 5793847 | |
HRA | Receiver | D628291-P | N/A | January/1954 to December/1956 | 4660001 - 5793847 | |
HRA | Receiver | D628291-Q | N/A | January/1954 to December/1956 | 4660001 - 5793847 | |
HRA | Receiver | D628291-Y | N/A | January/1954 to December/1954 | 4660001 - 5793847 | |
IHC | Barrel | D6535448 | N/A | January/1953 to November/1956 | 4400000 - 5278245 | Manufactured by Line Material Compay. Barrels are marked with date and "LMR". Date should be within a few months of Receiver manufacture date. |
IHC | Bullet Guide | B8875 | Type 5 | January/1953 to December/1956 | 4400000 - 5278245 | Stamped steel, wide slot. Notch 0.25 inch in radius on upper left side. |
IHC | Clip Ejector | C46018 | N/A | January/1953 to December/1956 | 4400000 - 5278245 | parkerized |
IHC | Clip Latch | C46011 | Springfield 2 | January/1953 to December/1956 | 4400000 - 5278245 | Squared front end, inspector's initials("A" or "C") beside spring retaining hole on inside |
IHC | Clip Latch Pin | N/A | N/A | January/1953 to December/1956 | 4400000 - 5278245 | 3.280 inches long,head is 0.155 inches in diameter and 0.065 inches high. Opposite end slightly rounded. Body of pin is 0.119 inches in diameter. |
IHC | Clip Latch Spring | N/A | N/A | January/1953 to December/1956 | 4400000 - 5278245 | 0.03 inch steel wire, 5 coils, outside diameter 0.26 inch. White finish is original, Parkerized indicates refinishing. |
IHC | Follower and Slide | N/A | Type 2F | January/1953 to December/1956 | 4400000 - 5278245 | Unmarked. |
IHC | Follower Arm | B8869 | Type 4 | January/1953 to December/1956 | 4400000 - 5278245 | No bevel, rounded follower arm pin lugs. Unmarked. |
IHC | Follower Arm Pin | A13667 | Type 3 | January/1953 to December/1956 | 4400000 - 5278245 | No rebate on either end, straight shaft. |
IHC | Follower Rod | C64331 | Type 5 | January/1953 to December/1956 | 4660001 - 5793847 | Stamped sheet metal. Long fork plate riveted. No marking. Grooves/knurls eliminated. |
IHC | Gas Cylinder | D35449 | Type 2C | January/1953 to December/1956 | 4400000 - 5278245 | .575 - .580 inch front sight base, flat top on rear ring, unmarked. May show numbers or letters for machinist's marks. |
IHC | Gas Cylinder Lock | B147426 | Type 3A | January/1953 to December/1956 | 4400000 - 5278245 | Front face not chamfered. Hardened, high hump with square edges. Unmarked. 1.455 inches high. |
IHC | Gas Cylinder Lock Screw(Plug) | B7310079 | Type 3 | January/1953 to December/1956 | 4400000 - 5278245 | Return poppet valve, cross shaped slot. Marked "IHC" or "IHC NHC". |
IHC | Lower Band | C46000 | Type 3 | January/1953 to December/1957 | 4400000 - 5278245 | Stamped flat profile with no groove or scallops. Unmarked. |
IHC | Lower Band Pin | N/A | Type 2 | January/1953 to December/1956 | 4400000 - 5278245 | Roll pin. |
IHC | Operating Rod | 6535382 IHC | 10 | December/1955 to December/1956 | 5100000 - 5278245 | Straight bolt lug, 5/16 radius cut, flat side, marking on bottom. May have a letter marking below drawing number on late production. |
IHC | Operating Rod | D-6535382 IHC | 10 | January/1953 to December/1954 | 4400000 - 4660000 | Straight bolt lug, 5/16 radius cut, flat side, marking on bottom |
IHC | Operating Rod | D6535382 IHC | 10 | January/1954 to December/1955 | 5000501 - 5150000 | Straight bolt lug, 5/16 radius cut, flat side, marking on bottom |
IHC | Operating Rod Catch Assembly | C46027 | Type 2 | January/1953 to December/1956 | 4400000 - 5278245 | Early unmarked, later marked "B,C,F,G,H, or I". Right fork 0.10 in wide and Left fork 0.07 in wide, width at accelerator rivet 0.79 in. |
IHC | Operating Rod Spring | SA14675/B147658 | N/A | January/1953 to December/1956 | 4400000 - 5278245 | Round cross section. |
IHC | Receiver | D6528291-C | N/A | January/1953 to December/1953 | 4400000 - 4660000 | |
IHC | Receiver | D6528291-D | N/A | January/1953 to December/1953 | 4400000 - 4660000 | |