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Title:	RIFLE, MILITARY -  U.S. RIFLE M14 "GUERRILLA RIFLE" 7.62MM SN# X-45
Maker/Manufacturer:	SPRINGFIELD ARMORY/HARRINGTON & RICHARDSON
Date of Manufacture:	1962
Eminent Figure:
Catalog Number:	SPAR 3306
Measurements:	OL:101CM 39 7/8" BL: 48.8CM 19 1/4" 8 lbs.

Object Description:

U.S. RIFLE M14 "GUERRILLA RIFLE" 7.62MM SN# X-45
Manufactured by Harrington & Richardson, Worcester, Ma. in 1962 - Experimental M14 "Guerrilla Rifle" as modified by Harrington & Richardson. Select switch. Hinged buttplate. Non-ventilated plastic handguard. Weapon weighs approximately 8 lbs.

Markings:
Receiver: U.S. RIFLE/7.62MM M14/H&R ARMS CO./X-45.
Bolt: 7790186/HRT A16/B11.
Barrel: H R 7790190 6-62 AB.
Stock: P in circle.

Weapon transferred to the Museum on 7 January 1965. At that time weapon was appraised at $75.00.

Notes: "Harrington & Richardson built some prototype M14 rifles in 1962 known as 'Guerilla guns.' The 'Guerilla gun had a combination perforated conical flash suppressor and gas cylinder and a USGI M14 chromium plated barrel shortened to 19.3". These modifications shortened the M14 overall length by 4.5". The Guerilla guns had serial numbers with the letter X. The M14 Guerilla rifle was never adopted by the U.S. Army. At least one M14 Guerilla rifle was submitted to Springfield Armory in 1962 and subsequently to the Springfield Armory Historical Museum on January 7, 1965. Springfield Armory tested this M14 Guerilla rifle for flash suppression in January, 1963. Harrington and Richardson kept a number of the M14 Guerilla rifles until auctioned off in 1986 at the close of operations (see U.S. Civilian Ownership of Select Fire M14 Type Rifles). One two digit X series serial number Harrington & Richardson Guerilla gun was fitted with an under side folding stock. The folding stock appears to be an M14E1 Type III folding stock. The receiver of this rifle has no scope mount boos of threaded bolt hole." - Emerson

References:
Emerson, Lee. M14 RIFLE HISTORY AND DEVELOPMENT. January 13, 2006.