Help and contact
(0) Basket
Newsletter
Home
Shotgun Parts
Receiver & Action Parts
Action Parts
Action Hardware
GENESIS ARMS GEN-12 UPPER RECEIVER 12 GAUGE
Support
GENESIS ARMS
GEN-12 UPPER RECEIVER 12 GAUGE
1849.9
1999.9
3
GBP
Product no.: 100042646
GENESIS ARMS GEN-12 10.5" UPPER RECEIVER 12 GAUGE
Mfr Part: G12U10 The GEN12 was not the 1st ""AR shotgun"", but it is the first to use a standard 308 lower. The GEN12 upper was specifically designed to matte to any DPMS GEN1 308 Lower or other 308 lowers sharing the same pattern. The GEN12 upper will work with either the shorter DPMS buffer tube or the longer Armalite AR10®/ 308 tubes. The center of the upper is the short recoil system which cycles the action. This means there is no gas tube or piston. The cyclic rate can be tuned by adjusting buffer weights and springs by the end user. The upper will cycle birdshot or magnums and most everything in between. It reliably feeds both 2 ¾” shells and 3” shells on a standard short DPMS 308 buffer and spring. However they recommend a H3 buffer or a Hydraulic buffer when shooting magnums or any 3”. These uppers are compatible with SGM Tactical Saiga 12 choke tubes with external threads. This is sold as an upper so this does not require a FFL to purchase; however, you are responsible to know the laws in your state and purchase accordingly. Some Assembly required: Do to the shock and recoil from the 12 gauge, and the inherent differences within magazine geometry, you will be provided several parts to replace on your DMPS GEN1 patterned lower to ensure functionality and compatibility. BEEF UP KIT: Magazine catch & increased power spring Bolt catch & increased power spring Anti-rotation trigger pin set ***These parts need to be installed.
GENESIS ARMS GEN-12 10.5" UPPER RECEIVER 12 GAUGE
Mfr Part: G12U10 The GEN12 was not the 1st ""AR shotgun"", but it is the first to use a standard 308 lower. The GEN12 upper was specifically designed to matte to any DPMS GEN1 308 Lower or other 308 lowers sharing the same pattern. The GEN12 upper will work with either the shorter DPMS buffer tube or the longer Armalite AR10®/ 308 tubes. The center of the upper is the short recoil system which cycles the action. This means there is no gas tube or piston. The cyclic rate can be tuned by adjusting buffer weights and springs by the end user. The upper will cycle birdshot or magnums and most everything in between. It reliably feeds both 2 ¾” shells and 3” shells on a standard short DPMS 308 buffer and spring. However they recommend a H3 buffer or a Hydraulic buffer when shooting magnums or any 3”. These uppers are compatible with SGM Tactical Saiga 12 choke tubes with external threads. This is sold as an upper so this does not require a FFL to purchase; however, you are responsible to know the laws in your state and purchase accordingly. Some Assembly required: Do to the shock and recoil from the 12 gauge, and the inherent differences within magazine geometry, you will be provided several parts to replace on your DMPS GEN1 patterned lower to ensure functionality and compatibility. BEEF UP KIT: Magazine catch & increased power spring Bolt catch & increased power spring Anti-rotation trigger pin set ***These parts need to be installed.
1999.9
GBP
0
£1,999.90
*
Is a 'Call to order' product.
Not available.
Restrictions
- Is a 'Call to order' product.
Top takeaways
- The GEN12 upper receiver by Genesis Arms LLC is designed to fit any standard DPMS GEN1 308 Lower and is compatible with both DPMS and Armalite AR10®/308 buffer tubes.
- It features a short recoil system for cycling the action without the need for a gas tube or piston and can be tuned for different ammunition by adjusting buffer weights and springs.
- The upper is capable of firing both 2 ¾” and 3” shells and comes with a BEEF UP KIT to ensure compatibility and functionality with the DMPS GEN1 patterned lower.
Attributes
Delivery weight: 2.697kg Shipping height: 108mm Shipping width: 108mm Shipping length: 625mm
Item details
Made in USA
US export classification: 0A501.d
US export classification: 0A501.d
Product no.: 100042645
GENESIS ARMS GEN-12 14.5" UPPER RECEIVER 12 GAUGE
Mfr Part: G12U14 The GEN12 was not the 1st ""AR shotgun"", but it is the first to use a standard 308 lower. The GEN12 upper was specifically designed to matte to any DPMS GEN1 308 Lower or other 308 lowers sharing the same pattern. The GEN12 upper will work with either the shorter DPMS buffer tube or the longer Armalite AR10®/ 308 tubes. The center of the upper is the short recoil system which cycles the action. This means there is no gas tube or piston. The cyclic rate can be tuned by adjusting buffer weights and springs by the end user. The upper will cycle birdshot or magnums and most everything in between. It reliably feeds both 2 ¾” shells and 3” shells on a standard short DPMS 308 buffer and spring. However they recommend a H3 buffer or a Hydraulic buffer when shooting magnums or any 3”. These uppers are compatible with SGM Tactical Saiga 12 choke tubes with external threads. This is sold as an upper so this does not require a FFL to purchase; however, you are responsible to know the laws in your state and purchase accordingly. Some Assembly required: Do to the shock and recoil from the 12 gauge, and the inherent differences within magazine geometry, you will be provided several parts to replace on your DMPS GEN1 patterned lower to ensure functionality and compatibility. BEEF UP KIT: Magazine catch & increased power spring Bolt catch & increased power spring Anti-rotation trigger pin set ***These parts need to be installed.
GENESIS ARMS GEN-12 14.5" UPPER RECEIVER 12 GAUGE
Mfr Part: G12U14 The GEN12 was not the 1st ""AR shotgun"", but it is the first to use a standard 308 lower. The GEN12 upper was specifically designed to matte to any DPMS GEN1 308 Lower or other 308 lowers sharing the same pattern. The GEN12 upper will work with either the shorter DPMS buffer tube or the longer Armalite AR10®/ 308 tubes. The center of the upper is the short recoil system which cycles the action. This means there is no gas tube or piston. The cyclic rate can be tuned by adjusting buffer weights and springs by the end user. The upper will cycle birdshot or magnums and most everything in between. It reliably feeds both 2 ¾” shells and 3” shells on a standard short DPMS 308 buffer and spring. However they recommend a H3 buffer or a Hydraulic buffer when shooting magnums or any 3”. These uppers are compatible with SGM Tactical Saiga 12 choke tubes with external threads. This is sold as an upper so this does not require a FFL to purchase; however, you are responsible to know the laws in your state and purchase accordingly. Some Assembly required: Do to the shock and recoil from the 12 gauge, and the inherent differences within magazine geometry, you will be provided several parts to replace on your DMPS GEN1 patterned lower to ensure functionality and compatibility. BEEF UP KIT: Magazine catch & increased power spring Bolt catch & increased power spring Anti-rotation trigger pin set ***These parts need to be installed.
1999.9
GBP
0
£1,999.90
*
Is a 'Call to order' product.
Not available.
Restrictions
- Is a 'Call to order' product.
Top takeaways
- The GEN-12 upper receiver by Genesis Arms LLC is designed to fit standard DPMS GEN1 308 lowers and is compatible with both DPMS and Armalite buffer tubes.
- This upper receiver can cycle a range of 12 gauge ammunition from birdshot to magnums using a short recoil system, with tuning available via buffer weights and springs.
- No FFL is required to purchase the GEN-12 upper, but it comes with a "Beef Up Kit" for installation to ensure compatibility with the 12 gauge recoil and magazine geometry.
Attributes
Delivery weight: 2.91kg Shipping height: 108mm Shipping width: 108mm Shipping length: 625mm
Item details
Made in USA
US export classification: 0A501.d
US export classification: 0A501.d
Product no.: 100042644
GENESIS ARMS GEN-12 18" UPPER RECEIVER 12 GAUGE
Mfr Part: G12-U18 The GEN12 was not the 1st ""AR shotgun"", but it is the first to use a standard 308 lower. The GEN12 upper was specifically designed to matte to any DPMS GEN1 308 Lower or other 308 lowers sharing the same pattern. The GEN12 upper will work with either the shorter DPMS buffer tube or the longer Armalite AR10®/ 308 tubes. The center of the upper is the short recoil system which cycles the action. This means there is no gas tube or piston. The cyclic rate can be tuned by adjusting buffer weights and springs by the end user. The upper will cycle birdshot or magnums and most everything in between. It reliably feeds both 2 ¾” shells and 3” shells on a standard short DPMS 308 buffer and spring. However they recommend a H3 buffer or a Hydraulic buffer when shooting magnums or any 3”. These uppers are compatible with SGM Tactical Saiga 12 choke tubes with external threads. This is sold as an upper so this does not require a FFL to purchase; however, you are responsible to know the laws in your state and purchase accordingly. Some Assembly required: Do to the shock and recoil from the 12 gauge, and the inherent differences within magazine geometry, you will be provided several parts to replace on your DMPS GEN1 patterned lower to ensure functionality and compatibility. BEEF UP KIT: Magazine catch & increased power spring Bolt catch & increased power spring Anti-rotation trigger pin set ***These parts need to be installed.
GENESIS ARMS GEN-12 18" UPPER RECEIVER 12 GAUGE
Mfr Part: G12-U18 The GEN12 was not the 1st ""AR shotgun"", but it is the first to use a standard 308 lower. The GEN12 upper was specifically designed to matte to any DPMS GEN1 308 Lower or other 308 lowers sharing the same pattern. The GEN12 upper will work with either the shorter DPMS buffer tube or the longer Armalite AR10®/ 308 tubes. The center of the upper is the short recoil system which cycles the action. This means there is no gas tube or piston. The cyclic rate can be tuned by adjusting buffer weights and springs by the end user. The upper will cycle birdshot or magnums and most everything in between. It reliably feeds both 2 ¾” shells and 3” shells on a standard short DPMS 308 buffer and spring. However they recommend a H3 buffer or a Hydraulic buffer when shooting magnums or any 3”. These uppers are compatible with SGM Tactical Saiga 12 choke tubes with external threads. This is sold as an upper so this does not require a FFL to purchase; however, you are responsible to know the laws in your state and purchase accordingly. Some Assembly required: Do to the shock and recoil from the 12 gauge, and the inherent differences within magazine geometry, you will be provided several parts to replace on your DMPS GEN1 patterned lower to ensure functionality and compatibility. BEEF UP KIT: Magazine catch & increased power spring Bolt catch & increased power spring Anti-rotation trigger pin set ***These parts need to be installed.
1849.9
GBP
0
£1,849.90
*
Is a 'Call to order' product.
Not available.
Restrictions
- Is a 'Call to order' product.
Top takeaways
- The GEN12 upper receiver is designed to mate with any standard DPMS GEN1 308 Lower and is compatible with both DPMS and Armalite buffer tubes.
- It features a short recoil system for cycling, can handle a range of ammunition from birdshot to magnums, and does not require a gas tube or piston.
- The upper is sold with a "BEEF UP KIT" for the lower receiver to ensure compatibility and functionality due to the recoil of the 12 gauge.
Attributes
Delivery weight: 3.04kg Shipping height: 114mm Shipping width: 114mm Shipping length: 787mm
Item details
Made in USA
US export classification: 0A501.d
US export classification: 0A501.d
Upgrade your shotgun with the GEN-12 Upper Receiver! 🔥 Compatible with DPMS GEN1 lowers, it cycles smoothly and handles various shells.
Classical view
Mobile view