Geissele

The Geissele Stressproof Bolt is made from Carpenter 158, however this is not your typical material spec’d by the US Government. Since Geissele wanted to take it to the next level, our engineers worked directly with the Carpenter Steel metallurgists in Reading PA, to produce a special heat of material known as Carpenter 158+. This material is cleaner with less impurities, ultimately making it stronger and more consistent. We did not stop there, we decided to forge the bolt. Using the same...

1. Takedown Pin & Pivot Pin Detents (2) 2. Takedown Pin & Pivot Pin Springs (2) 3. Takedown Pivot Pin 4. Bolt Catch Plunger 5. Bolt Catch Spring 6. Bolt Catch Coiled Pin 7. Mil-Spec Bolt Catch 8. Safety Detent 9. Buffer Retainer10. Buffer Retainer Spring11. Safety Detent Spring 12. Takedown Pin13. Magazine Release Button14. Magazine Release Spring15. Geissele Posi-Lock Safety 16. Magazine Catch17. Coiled Trigger Guard Pin18. Mil-Spec Trigger Guard ...

The REBCG comes with the Geissele Stressproof Bolt. Made from Carpenter 158+, directly developed with Carpenter Steel metallurgists to create a material that is cleaner and has less impurities. This makes our Stressproof bolt stronger and more fatigue resistant. The Geissele Stressproof bolt is also forged, not machined from barstock. This allows us to optimize the grain structure of the steel to yield a bolt capable of 5 times the life of a mil-spec bolt. Each bolt is rigorously inspected,...

The Reliability Enhanced Bolt Carrier Group comes with the Geissele Stressproof Bolt. Made from Carpenter 158+, directly developed with Carpenter Steel metallurgists to create a material that is cleaner and has less impurities. This makes our Stressproof bolt stronger and more fatigue resistant. The Geissele Stressproof bolt is also forged, not machined from barstock. This allows us to optimize the grain structure of the steel to yield a bolt capable of 5 times the life of a mil-spec bolt....

The Super Modular Rail (SMR) MK4 M-LOK is Geissele's ultra-lightweight M-LOK option. These rails are purpose-built and feature integrated M1913 picatinny rail sections at the fore of the rail in the 3, 6 and 9 o'clock positions. Maximum venting for heat dissipation also dramatically reduces the rail's overall weight, while maintaining its same strong and rigid platform. Utilizing Magpul's M-LOK technology at the 3, 6, and 9 o'clock positions, as well as the upper 45 quadrants. The SMR MK4 is...

Our rails are designed to work with Mil-Spec M4 upper receivers. The compatibility with billet receiver sets is unknown.

The Super Precision High-Power Rifle National Match Scope Mount was specifically engineered to meet the strict demands of High-Power competitive shooting. The Civilian Marksmanship Program (CMP) recently changed the Service Rifle Rules to allow optic sights. When shooting from position and slung into the rifle traditional scope mounts are too high for a good cheek weld and do not allow the scope to be moved forward for correct eye relief. These Super Precision High-Power Mounts were designed...

The Super Precision 1.93" Scope Mount was developed specifically for scenarios such as shooting while wearing a gas mask. 1.93" is also an optimal height for the optic to clear most common range finders, lasers or IR devices such as a PEQ15. These mounts are precision machined from a single piece of 7075-T6 high strength aluminum and will be available in both co-witness and lower third co-witness options. They will also be available in black Type 3 hard coat anodize as well as our proprietary...

MATERIAL: 7075-T6COLOR: Black or DDCFINISH: Type-3 Hardcoat AnodizeWEIGHT: 7.1 ozRING SIZE: 30mm

The Super Precision ACOG Series was developed specifically to work with the Trijicon 4x power ACOG series of optics. These mounts are precision machined from a single piece of 7075-T6 high strength aluminum. Utilizing Geisseles update of the classic nut and bolt method, this mount will attach your ACOG to your weapon with 2,800 pounds of clamping force, and features 4 shear lugs for maximum rigidity and return to zero. Available in black only. Note : We are a factory direct LE/Mil dealer....

The Super Precision MRO Series was developed specifically to work with the Trijicon MRO and like mounted red dot optics. These mounts are precision machined from a single piece of 7075-T6 high strength aluminum. Utilizing Geisseles update of the classic nut and bolt method, this mount will attach your red dot to your weapon with 1,400 pounds of clamping force, and features 3 shear lugs for maximum rigidity and return to zero. Available in both co-witness and lower third co-witness options....

Utilizing Geisseles update of the classic nut and bolt method, this mount will attach your red dot to your weapon with 1,400 pounds of clamping force, and features 3 shear lugs for maximum rigidity and return to zero. Available in both co-witness and lower third co-witness options.

They are available in black type 3 hard coat anodize as well as our proprietary DDC (Desert Dirt Color) type 3 hard coat anodize. Utilizing Geissele’s update of the classic nut and bolt method, this mount will attach your red dot to your weapon with 1,400 pounds of clamping force, and features 3 shear lugs for maximum rigidity and return to zero. Geissele DDC (Desert Dirt Color) Disclaimer **** Geissele DDC, or Desert Dirt Color, refers to the variety of shades of desert terrain. Differing...

The Geissele Reaction Block is designed to aid in the assembly of lower receivers. Once the armorer has installed the buffer tube, the lower receiver can then be slid into the Reaction Block at the 12, 3, 6 and 9 oclock positions. This allows the armorer to rotate the lower receiver by 90 increments in the block simply by loosening the provided nylon screws, removing the lower receiver and sliding it back in at its desired orientation. The Reaction Block provides an ultra-stable platform for...

The AR15/M4 Reaction Rod makes the removal and installation of barrels, flash hiders, gas blocks and hand guards much easier and simpler. The Reaction Rod is designed to be gripped in a bench vise so that the rod is either horizontal or vertical. The upper receiver is then slid onto the rod and the rods integral splines enter the barrel extension and secure the barrel extension from turning. This allows all the torque from barrel nut wrenches to go directly into the barrel extension. In...

The hole in the tip of the Gas Block Roll Pin Tool is sized so that the roll pin will need to be pressed into the tool first (the roll pin will not just slide in). Stand the roll pin on a hard surface and tap the tool onto the pin to seat it in the tool. When the hole in the gas block grabs the roll pin, the pin will collapse enough so the tool can be removed from the roll pin. Afterwards, all that is needed is a tap with a punch to seat the roll pin in the gas block.

The AR10/SR25 Reaction Rod makes the removal and installation of barrels, flash hiders, gas blocks and hand guards much easier and simpler. The Reaction Rod is designed to be gripped in a bench vise so that the rod is either horizontal or vertical. The upper receiver is then slid onto the rod and the rods integral splines enter the barrel extension and secure the barrel extension from turning. This allows all the torque from barrel nut wrenches to go directly into the barrel extension. In...

The Geissele Gas Block Pin Punch Set is made specifically for the removal and installation of the 0.078" roll pin that secures the gas tube to the gas block of an AR-15/AR-10. Removal of a rusted-in gas block roll pin has always been a challenge since there are no commercial pin punches in 0.078" diameter. Additionally, 1/16" (0.062") punches have a tendency to bend and very few starter punches are available in 1/16" diameter. The Geissele Gas Block Pin Punch Set makes gas block work a whole...

The Super Reaction Rod was designed with the advanced armorer in mind, an armorer who frequently works on AR15/M4 platforms with over torqued, seized or Loctited barrel nuts. The Super Reaction Rod works by pre-loading the barrel nut extension to the lugs of the Super Reaction Rod to eliminate any movement before adding torque to the barrel nut, while at the same time fixing the upper receiver into place. Having the barrel nut extension mated to the Super Reaction Rod lugs and fixing the upper...