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Key Elements Vortex/Brakes/Suppressors Mounts/Grips Accessories/Parts  
(Click image to enlarge) Part # Fits Name   Price
    M14 SEI M14 Barstock Receiver, bolt, and trigger housing
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Available thru:

Crocs Gunshop
crocodile@newmexico.com
+1 505 757-3461

 
 

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2025
9345-M14SE
M14 Medium Heavy 22” Barrel, M21A5-C-IED
Chrome-moly, unlined, 1:10 ROT. Installation cost will vary, due to relative difficulties associated with various commercially manufactured receivers. Customer to specify chambering (e.g M118LR, M852). Will shoot accurately with M80 Ball Ammo. M80HT heat treat is available at additional cost.
• DOWNLOAD SPECIFICATIONS

Approved by TACOM-RI for U.S. Army Reserve Shooting Team.

NOTE: SEI recommends sending your rifle here installation – all our M14 barrels are short chambered, and require fitting to the receiver. We use a special made Manson M118LR reamer, that allows accurate headspace for M118LR 175 gr. through M80 ball ammo.

$350.00
  2026 M14 Medium Heavy 18” Barrel, M21A5-C-IED $350.00

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2028 M14 Standard 22” Barrel
1:10” twist, 4 grooves. Made from 4140 chrome-moly and stress relived, with MIL-STD 171 magnesium phosphate finish.

NOTE: SEI recommends sending your rifle here installation – all our M14 barrels are short chambered, and require fitting to the receiver. We use a special made Manson M118LR reamer, that allows accurate headspace for M118LR 175 gr. through M80 ball ammo.

$380.00

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2027 M14

950 yard proof these barrels work... click here
Standard Weight 18” Barrel, M14 DMR
1:10” twist, 4 grooves. Made from 4140 chrome-moly and stress relived, with MIL-STD 171 magnesium phosphate finish.

This is a great replacement for Scout rifles, a Scout-type gun build, or MK14 Navy, M39EMR/USMC weapon. Very accurate out to 900+ yards with good grade of ammo such as M118LR or U.S.N. MK316 ammo.

The SEI P/N 2013 GLFS-D-18 gas lock, made from fatigue proof steel, has the correct deck height that allows the use of a standard USGI front sight, or one of our bar stock sights (shown below): P/N 2055 USGI replacement, P/N 2004 National Match with .062” blade, P/N 2018 Tritium Bar Stripe, or P/N2019 Tritium Dot.

NOTE: SEI recommends sending your rifle here installation – all our M14 barrels are short chambered, and require fitting to the receiver. We use a special made Manson M118LR reamer, that allows accurate headspace for M118LR 175 gr. through M80 ball ammo.

$380.00

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2022 M14
SOCOM 16/II
M14 SOCOM CQB Barrel, 16”
Replaces Springfield SOCOM 16 and SOCOM II, or can be used for new builds on any M14 type receiver. 1:10” twist, 4 grooves. Made from 4140 chrome-moly and stress relived, with MIL-STD 171 magnesium phosphate finish. Barrel is crowned at muzzle, concentric to bore and of the proper depth. Chambers (when we install them) are a 16+ finish.

Our barrels will shoot 1 MOA with M118LR or any of the 168 gr. factory match ammo. USGI LC M80 ball or any of the U.S. made M80 ball (with the exception of Portuguese 147grn. from the 1980’s) will shoot under 2 MOA most of the time.

We recommend that you use the P/N 2001V SOCOM Kit, The SEI gas lock, made from fatigue proof steel, has the correct deck height that allows the use of a standard USGI front sight, or one of our bar stock sights (shown below): P/N 2055 USGI replacement, P/N 2018 Tritium Bar Stripe, P/N2019 Tritium Dot, or P/N 2004 National Match. We also recommend replacement of the standard rear sight with P/N 2020, that uses a smaller aperture for better accuracy.

Featured in the Shooting Illustrated Jan. 2012 issue, written by Gary P. Johnson.

NOTE: SEI recommends sending your rifle here installation – all our M14 barrels are short chambered, and require fitting to the receiver. We use a special made Manson M118LR reamer, that allows accurate headspace for M118LR 175 gr. through M80 ball ammo.

$350.00

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2012 M14 Gas Lock Front Sight - Hooded (GLFS-H) (US Army)
Features height-adjustable .062” dia. front sight pin, used on SEI’s Crazy Horse, 2ID, USN, and USMC versions. Chrome-moly, highly advanced metallurgical process. Double heat treated, as well as M80HT, corrosion resistant 60 HRC surface. For 18" & 22.0" barrel lengths (i.e. M14SE).
• DOWNLOAD SPECIFICATIONS
$85.00

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2013 M14 GLFS-D-18 (Dovetail)
(USN & USAF)

Deck height allows use of GI or match front sight. Chrome-moly, highly advanced metallurgical process. Double heat treated, as well as M80HT, corrosion resistant 60 HRC surface. For 18.0" barrel (i.e. MK14 SEI).
• DOWNLOAD SPECIFICATIONS

Available at Brownells

$85.00

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2011 M14 GLFS-D-22 Dovetail
Deck height allows use of GI or match front sight. Chrome-moly, highly advanced metallurgical process. Double heat treated, as well as M80HT, corrosion resistant 60 HRC surface. Designed for 22.0" barrels.
• DOWNLOAD SPECIFICATIONS

Available at Brownells

$85.00

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2071 M14 SEI M14 Gas Cylinder,
NSN 1005-00-790-8766

New production made to exact USGI specifications. Forged, fully machined and heat-treated 416 stainless steel. Double heat-treated to include M80HT 60 HRC on surface. Will not corrode. To finish, this part is cryogenically treated. As used on our military contracted rifle builds.

Available at Brownells

$115.00

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2030 M14 Shim Kit Set, Gas Cylinder
This shim set includes 4 different thickness shims to properly shim your gas cylinder to your barrel. Includes .005, .008, .010 and .015 shims.
$15.00

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2001V-GL M14
SOCOM 16
SEI Socom 16 Gas Lock
5/8”x24 with .735” length of thread, made from 1144 fatigue proof steel bar stock. Height of the gas lock dovetail deck allows the use of a standard USGI front sight, SEI NM front sight, or Tritium systems (sights not included). Use of Gas Lock Wrench P/N 2017 is recommended with this kit.

WARNING – Will not work with factory SOCOM or SOCOM II XS Style Front sights, they sit egregiously high and will have you shooting extremely low past the point of adjustment.

$85.00

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2001V-GL-NY M14
SOCOM 16
SEI Compliant Gas Lock
For customers with a Springfield Armory SOCOM 16 rifle who live in areas where muzzle threads, flash hiders, or even muzzle brakes are prohibited, this part may be compliant if intstalled per the law.

This part features a standard front sight deck height that allows the use of Standard GI Sight (P/N 2055), NM Front Sight (P/N 2004), Tritium Combat Bar Sight (P/N 2018), or the Tritium Combat Dot Sight (P/N 2019).

The SOCOM 16 factory muzzle brake is a one-piece casting that features a lower deck height than a standard M14/M1A. In order to compensate, sight that is sold on the SOCOM 16 is taller and wider, and the aperture is also wider, than the regular M14 version. The blade on the factory SOCOM XS sight is .135" and the rear aperture is .130”, compared to a front sight width of .075” and an aperture of .065” on a standard size.

Solid bar stock 1144 Fatigue-Proof steel with mil spec magnesium phosphate finish. Use of XF-7 Grease (pn #1019) on the muzzle threads during installation is recommended. Threaded 5/8x24 .735.

Available at Brownells

$85.00

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2002 M14 M14 Adaptor, Castle Nut Type
Machined from fatigue proof steel bar stock. Includes wire EDM internal male splines and rectangular hole for the castle nut. Threaded 5/8"x24, with .735" length of thread, a common size that fits most other accessories.

The dove tail deck will fit any USGI type front sight, including:
P/N 2055 SEI/USGI standard front sight
P/N 2004 NM .062
P/N 2018 Tritium Bar Stripe
P/N 2019 Tritium Dot

If you are using this with an 18 inch barrel:
18" barrels will shoot higher than 22" barrels. To compensate, SEI recommends P/N 2012 GLFS-D-18, or P/N 2013 GLFS-D-18 Gas Lock that is at the correct height, mated to a standard front sight such as the ones mentioned above. Springfield Armory uses a taller front sight like the Springfield Scout.

$75.00

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2002-NY M14 M14 Adaptor, Castle Nut Type, New York Compliant
Machined from fatigue proof steel bar stock. Includes wire EDM internal male splines and rectangular hole for the castle nut. Threads have been machined off to comply with compliant state regulations regarding “No flash suppressor, no muzzle brake”. Castle nut must be TIG welded to the adapter to make it a permanent device.
$75.00

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2018 M14 M14 Tritium Bar Combat Sight
Designed for use in close combat during limited visibility with MK14-type weapons. Not for use in high precision engagements. Genuine Trijicon self luminous vial in 4140 Chrome Moly Wire EDM front sight unit.
$85.00

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2019 M14 M-14 Tritium Close Combat Sight (TCCS)
Designed for use in close combat during limited visibility with MK14-type weapons. Not for use in high precision engagements. Genuine Trijicon self luminous vial in 4140 Chrome Moly Wire EDM front sight unit.
• DOWNLOAD SPECIFICATIONS

Available at Brownells

$85.00

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2055 M14 M14 Standard Front Sight
Standard USGI front sight replacement for the M14/M1A type rifles. Made from 4140 chrome-moly steel, wire EDM process. Overall height .570” +.005. Blade has sharp corners for clear sight picture. MIL-STD 171 phosphate finish. Includes 6-40 screw.

Available at Brownells

$35.00

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2004 M14 M14 National Match Front Sight
Heat-treated, 4130 chrome moly front sights make it fast and easy to upgrade your original military sights for improved strength and accuracy. Parkerized finish reduces glare and helps deflect light for a clear, easy-to-acquire sight picture in all light conditions. Match front sights feature a narrow, .062" wide front blade for a crisp, clean sight picture at all normal competition ranges.
$35.00

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2010 M14 M14 Bolt Stop
Manufactured by SEI to USGI specifications. Heat treated, carburized 8620 steel. Black phosphated.

Available at Brownells

$30.00

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2003 M14 SEI M14 Extended Bolt Stop/Release (NSN Pending)

Limited civilian availability. A must for high stress or cold weather applications. Standard issue on USN & USAF MK14's and US Army M14SE's.

Current design does not allow the bolt to close with an empty magazine inserted (but it can be closed if the magazine follower is pressed down).

CAUTION – the extended bolt stop/release is designed to make access and manipulation of the bolt much easier and faster. Therefore, DO NOT REST THE WEAPON ON ITS SIDE OR LEAVE IT UNATTENDED if the bolt is locked back and a loaded magazine is in the receiver. ALWAYS KEEP THE SAFETY ENGAGED.

• DOWNLOAD SPECIFICATIONS

Available at Brownells

$45.00

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2060 M14 M14 Trigger Group parts kit & Connector Lock Pin
Pins are S7 tool Steel, Heat treated 58 HRC. Spring is silicon-chrome for lighter trigger pull. Best used in conjunction with SEI Trigger Group Upgrade to customer–supplied trigger assembly – without the upgrade, kit will decrease trigger pull approx. 25% with standard models. Mid-Range and Max-Pak , call for more information.
$35.00

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2029 M14 M14 Connector Lock Pin
Replaces worn out USGI units for positive magazine engagement. Made from special SEI tool steel, case hardened to 58 HRC. Standard component found on M21A5/M14SE Crazy Horse.
$12.00

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2075-SBR M14 M14 Gas Piston

The SBR (Smith Battle Rifle) Gas Piston has been developed for the demands of 21st century warfare, and is superior to the issue versions.

Made from 440c cutlery grade stainless steel and stress relieved. OD grooves are fully radiused on the bottom (instead of square) to enhance cleaning and carbon removal. After heat treatment and through hardening to 58 HRc Rockwell, the pieces are ground to final dimensions, with a glass-like surface finish of 9 on the Profolomater, machined to tolerances of +/- .0005” (1/2 of 1000th of an inch). Final finishing includes surface hard chrome plating to .0005” depth, and heat treatment to our SOP to prevent chrome cracking and hydrogen embrittlement.

Developed for war fighters with the M14,EBR,EMR, etc., made to resist corrosion and excessive wear, the corners stay sharp where needed to minimize gas blow-by. When used with our M80HT gas cylinder, wear is kept to a minimum, and can withstand infrequent maintenance in the field. Accuracy will not be diminished and may improve as long as the barrel is in good condition.

• DOWNLOAD SPECIFICATIONS

Available at Brownells
$65.00

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2076 M14 M14/M21 A5 C-IED Gas plug (Longer)
New manufacture by SEI. 420 Stainless, double heat-treated to include M80HT 60 HRC on surface and cryogenically treated. Will not corrode. As used on our military contracted rifle builds.
$45.00

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2079 M14 Socom 16 Gas Plug (Shorter)
Shorter plug design, has more volume for gas. Also recommended for use with sound suppressors. 17-4 Stainless, double heat-treated – 45 HRC, then M80HT 60 HRC.
$45.00
  2068 M14 Op-Rod Guide M80HT $30.00
  2074 M14 Recoil Spring for Op-Rod
Silicon Chrome Steel
$30.00

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2088 M14 M14/M21A5 C-IED 4.5 lb Mid-range Trigger Upgrade
Requires customer–supplied trigger assembly. Includes SEI S-7 trigger and hammer axis pins with silicone-chrome hammer spring and re-parkerization. All parts deburred and smoothed as needed.
 
SEI can also replace your commercial safety and plunger housing with USGI parts for an additional $40.00. Please state this when ordering.
 
• DOWNLOAD SPECIFICATIONS
$125.00

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2087 M14 M14/M21A5 C-IED 4.5 lb MAX-PAK Trigger Upgrade
Requires customer–supplied trigger assembly. Same as Mid-Range, but with M80HT heat treat. Includes SEI S-7 trigger and hammer axis pins with silicone-chrome hammer spring and re-parkerization. All parts deburred and smoothed as needed.
 
SEI can also replace your commercial safety and plunger housing with USGI parts for an additional $40.00. Please state this when ordering.
 
• DOWNLOAD SPECIFICATIONS
$225.00

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2017 M14 Gas Lock Front Sight Wrench
New issue GLFS Wrench for M14SE SDM, MK14 Mod O rifle, and Crazy Horse/M21A5. Piston not included.
• DOWNLOAD SPECIFICATIONS

Available at Brownells

$35.00

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  M14 USGI Front Bands
NOS USGI Front Bands, Comes As Is, No Returns/Refunds.
$12.00

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  M14 USGI Trigger Plunger Housings
NOS USGI Plunger Housings, Comes As Is, No Returns/Refunds.
$10.00

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  M14
M1 Garand
USGI Safety
NOS USGI Safety. SA or ROBER-HT markings. Comes As Is, No Returns/Refunds.
$35.00