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AR-15/M16 UPPER RECEIVER ACTION BLOCK

AR-15/M16 UPPER RECEIVER ACTION BLOCK Reviews & Ratings

AR-15/M16 UPPER RECEIVER ACTION BLOCK

Heavy-duty blocks allow you to firmly clamp AR-15/M16 receiver halves in a vise without risk of crushing, twisting, or otherwise distorting them when applying vise pressure or torquing the barrel nut. Keeps your rifle secure for safe, effective cleaning, assembly, and repair. High pressure, solvent resistant, structural Rynite block and insert surround the entire upper receiver and support it inside and out to make rebarreling the AR-15/M16 an easy, one-man job. Lets you firmly secure a mil-spec carry handle receiver or mil-spec flattop receiver in a large bench vise for barrel removal/installation. Torque generated while tightening the barrel nut is transmitted to the block and insert, not the receiver. Minimizes the possibility of damage to the barrel detent pin and receiver detent notch. Holds securely without marring the finish.

DO NOT USE ON BILLET UPPERS OR LEFT HAND UPPERS, OR DAMAGE TO THE UPPER CAN RESULT.




SPECIFICATIONS:

  • Material: Injection-Molded Rynite
  • Color: Black
  • Fits: A1, A2 and Standard Flattop Receivers
  • Block:
    • Thickness: 2-1/2"
    • Width: 3-1/2"
    • Height: 4-1/2"
  • Insert:
    • Length: 8"
    • Diameter: 1"
  • Torque Tested to 200 ft. lbs

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Reviews Summary
Overall, the AR-15/M16 Upper Receiver Action Block receives mixed reviews. While many users praise its sturdy build and ease of use, some report fitment issues with certain brands. Overall, it's considered an essential tool for DIY modifications, though quality control could be improved to ensure compatibility across more receiver types.
What Reviewers Are Saying
Product Fit
40%
Several reviewers express concerns regarding the fit of the action block on various upper receivers, particularly noting issues with non-milspec brands like DPMS and others. While some found the snug fit beneficial, others had to customize or modify the block for better compatibility, indicating a variance in quality control.
Ease of Use
65%
Many users commend the action block for its ease of use, noting that it securely holds the upper receiver in place during assembly or maintenance tasks. This feature is highlighted as a major advantage, making barrel changes and other modifications straightforward and manageable for DIY enthusiasts.
Quality and Durability
50%
The build quality of the action block is generally seen as solid and durable, with several reviews highlighting its non-marring material that protects the finish of the upper receiver. However, there are mentions of variability, with some users dissatisfied with the quality control associated with their specific units.
Essential Tool
70%
Numerous reviews categorize this action block as an essential tool for anyone working on AR-15s or M-16s. Its utility is well-recognized among DIY rifle owners, as it helps to prevent damage to receivers and simplifies tasks like installing barrels or handguards.
Price Value
60%
Reviewers frequently comment on the competitive pricing of the action block, considering it a great value for the features and reliability it offers. Many believe it is worth the investment for the quality of service it provides during firearm maintenance.
5
Mr.D
Great product that does what it was meant to do!
5
a must have
great product and fast shipping
5
Great value for this excellent tool!
Easy to use and held tight. Hard to beat the price!
5
All good
Works perfectly as advertised
5
Perfect tool for mounting.
This was a big help in mounting my barrel / barrel nut to my AR15 upper receiver.
5
Ar15 M16A1 action block
Great product, makes putting on the barrel super easy... great quality very sturdy not cheap at all
5
Must Have for M16 Upper
Fits very snug (good) and notched for dust covers . Firm fit but not too tight. Perfect for barrel changeouts / barrel nut torqueing and timing. Doesn't mar finishes. Oh, and a great sale price as well. A must have for m16 uppers. Absolutely recommend this for the workshop.
5
Works just like it should have
I had a Spike's Tactical upper and it worked just like it was supposed to. The insert that goes inside the receiver was loose the whole time however. I'm not sure if it was doing anything. I ended up having to put 70 foot pounds of torque on the barrel nut to index the next hole and it worked flawlessly.
5
Works great with mil spec uppers
This action block works fine with both flattop and carry handle uppers. Stiff enough to really hold your work yet won't scratch the finish.
5
Great way to hold AR uppers.
Holds AR15 upper receivers solid. Easy to use.